Chapter 63. Treatment of Child and Adolescent Disorders

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Chapter 63. Treatment of Child and Adolescent Disorders

TREATMENT OF CHILD AND ADOLESCENT DISORDERS: INTRODUCTION

This chapter focuses on the psychopharmacology of psychiatric disorders in children and adolescents. However,

nonpharmacological treatment interventions are also an important component of a child’s psychiatric care. Individual

psychotherapy, group therapy, and family therapy may improve clinical outcome. Working closely with school personnel is

another ingredient in the treatment of a child with a psychiatric disorder. Case management for the child and support for the

family are other facets of treatment for children.

It is important for clinicians to be aware of the evidence base for the use of psychotropic medications for children and

adolescents. In this chapter, data from the literature, with a focus on controlled studies, are presented. On the basis of these

findings, clinical recommendations regarding pharmacotherapy for childhood psychiatric disorders are offered. The appendix

and tables contain specific information about dosages, monitoring, and adverse effects of psychotropics in children.

[Portions of the Attention-Deficit/Hyperactivity Disorder section of this chapter were adapted from Wagner KD: “Management

of Treatment Refractory Attention-Deficit/Hyperactivity Disorder in Children and Adolescents.” Psychopharmacology Bulletin

36:130–142, 2002. Used with permission.]

PSYCHOTROPIC MEDICATION FOR CHILDREN AND ADOLESCENTS

Attention has been focused on the need for controlled studies to assess the safety and efficacy of psychotropic medication for

children and adolescents. Although there has been a substantial increase in the use of psychotropic medications for children

(Safer et al. 1996) and for preschoolers (Zito et al. 2000), there is a significant gap between empirical treatment research

and clinical practice with these agents (Jensen et al. 1999). The pressing need to expand the empirical basis for the

treatment of children has resulted in a substantial increase in National Institute of Mental Health (NIMH)–funded research

for clinical trials in children and adolescents with psychiatric disorders (Vitiello 2001). The U.S. Food and Drug Administration

Modernization Act (FDAMA) of 1997, which provides a 6-month extension of market exclusivity for selected medications for

children, has resulted in a significant increase in the number of industry-sponsored studies of psychotropic medications in

youths. Following this act, the U.S. Food and Drug Administration (FDA) issued “Regulations Requiring Manufacturers to

Assess the Safety and Effectiveness of New Drugs and Biological Products in Pediatric Patients” (U.S. Food and Drug

Administration 1998), which became effective in April 1999. This rule allows the FDA to require pediatric studies of certain

new and marketed drugs, especially those that are likely to be commonly used for children. The information obtained from

these studies will allow product labeling to include directions for the safe and effective use of these medications in children.

To date, however, there are relatively few FDA-approved psychotropic medications for children and adolescents.

Evaluation

Prior to the initiation of psychotropic medication for children and adolescents, it is essential to conduct a comprehensive

evaluation to ensure the accuracy of the diagnosis. A thorough history and careful attention to the clinical presentation are

central components of the evaluation. The clinician should interview the child and parents separately so that both may have

the opportunity to freely express their concerns. Extended family members, school personnel, and school records are other

potential sources of information.

Clinicians must be skilled at differential diagnosis of childhood disorders, given that there is a significant overlap of

symptoms among these disorders (e.g., bipolar disorder and attention-deficit/hyperactivity disorder [ADHD]). Knowledge of

commonly occurring comorbid disorders is also necessary. Medical conditions, such as seizure disorders and hypothyroidism,

should be considered within the differential diagnosis and adequately assessed.

Disorder-specific rating scales at baseline and during the course of treatment may be useful in assisting with the

measurement of clinical outcome.

Clinical Issues Affecting Response to Pharmacotherapy

Whenever a child fails to respond to initial pharmacotherapy, several clinical issues should be addressed before initiating

alternative or adjunctive medication, as discussed below.

Diagnostic Accuracy

The diagnosis should be reassessed. Often there is symptomatic overlap among disorders that may lead to misdiagnosis. For

example, symptoms of excessive energy and distractibility are common features of both ADHD and bipolar disorder. Similarly,

irritability and sleep disturbance often occur in children with major depression, bipolar disorder, and posttraumatic stress

disorder (PTSD).

Comorbid Disorders

Unrecognized comorbid disorders may adversely affect treatment outcome. As an illustration, children with comorbid

internalizing disorders have been reported to have lower response rates to methylphenidate than children without

comorbidity (Tannock et al. 1995).Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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Psychosocial Factors

Child abuse, domestic violence, family conflict, parental psychopathology, and bullying by peers may lead to symptoms that

mimic or exacerbate a preexisting psychiatric disorder. As examples, ostracism by peers may lead to depression in a child, or

a parent with depression who has a negative cognitive style may heighten the pessimistic views of a child with depression.

Medication Compliance

Some children and adolescents are reluctant to take medication because of such reasons as denial of illness, perceived

stigma, and side effects. To increase medication compliance, it is essential that the child or adolescent, as well as the parent,

understand the youth’s disorder, course of illness, and goals of treatment. It is important for parents to participate in

monitoring their child’s medication compliance.

Nonpharmacological Treatment

Psychotherapy may be a component of treatment, either alone or in conjunction with medication. Specific psychotherapies

have been found to be effective in the treatment of some childhood disorders. As examples, cognitive-behavioral therapy

(CBT) (Brent et al. 1997) and interpersonal therapy (Mufson and Sills 2006) have demonstrated efficacy in the treatment of

adolescents with depression. Similarly, CBT is commonly used for the treatment of childhood anxiety disorders (Roblek and

Piacentini 2005). Behavior therapy has led to improvement in symptoms of ADHD for children (Pelham et al. 1998), although

stimulants have demonstrated superiority to behavioral treatment (MTA [Multimodal Treatment of ADHD] Cooperative Group

1999). Adjunctive psychoeducation to medication treatment has shown benefit in the treatment of children with bipolar

disorder (Fristad et al. 2003). Social skills training can be a useful component of treatment in autism spectrum disorders

(Krasny et al. 2003).

Informed Consent

Informed consent is necessary prior to prescribing psychotropic medication to any patient, but it is particularly important in

pediatric psychopharmacology because there are few FDA-approved medications and few controlled studies to address safety

and efficacy in children. There are five recommended components of informed consent for prescribing psychotropic

medications to children and adolescents (Popper 1987). The child’s parent(s) and the child/adolescent should be provided

with the following information:

  1. The purpose (benefits) of the treatment
  2. A description of the treatment process

An explanation of the risks of the treatment, including risks that would ordinarily be described by the psychiatrist and risks that would

be relevant to making the decision

  1.  
  2. A statement of the alternative treatments, including nontreatment

A statement that there may be unknown risks of these medications (This is particularly essential for children, because there is a

paucity of information on the potential long-term effects of psychotropic medications.)

  1.  

Evidence Base

It is important for clinicians to be aware of the evidence base for medication treatment of each childhood psychiatric

disorder. Clinical treatment guidelines generally rely on the strength of the available data in determining first-line agents

(Hughes et al. 2007; Kowatch et al. 2005). In most cases, clinicians should select a medication within the group of first-line

agents when initiating medication treatment with a child. Additional factors that will dictate medication choice are prior

medication history, medical history, side-effect profile of the drug, and adolescent and parent preferences.

MAJOR DEPRESSIVE DISORDER

The prevalence of major depression in children and adolescents is estimated to range from 1.8% to 4.6% (Kashani and

Sherman 1988; Kroes et al. 2001). DSM-IV-TR (American Psychiatric Association 2000) criteria are used to establish a

diagnosis of major depression in children and adolescents. The mean length of an episode of major depression in youth

ranges from 8 to 13 months, and relapse rates range from 30% to 70% (Birmaher et al. 2002). There is increasing evidence

for the continuity of depression from youth into adulthood (Dunn and Goodyer 2006).

Recently, a number of double-blind, placebo-controlled multicenter medication studies for treating major depression in

children and adolescents have been reported. In the following subsections, medication groups are discussed in order of

largest to smallest evidence base.

Selective Serotonin Reuptake Inhibitors

Fluoxetine

Fluoxetine is the only selective serotonin reuptake inhibitor (SSRI) medication to have FDA approval for the treatment of

major depression in children and adolescents. There have been three positive medication trials.

In the first study of fluoxetine, 96 child and adolescent outpatients (ages 8–17 years) with major depression were randomly

assigned to fluoxetine (20 mg/day) or placebo for an 8-week trial (Emslie et al. 1997). The fluoxetine group, with 27 youths

(56%) much or very much improved, showed statistically significant greater improvement in Clinical Global Impressions

(CGI) scores than did the placebo group, with 16 youths (33%) much or very much improved. Remission, which was defined

as a Children’s Depression Rating Scale—Revised (CDRS-R; Poznanski et al. 1985) score 28, occurred in 31% of the

fluoxetine group and 23% of the placebo group. Medication side effects leading to discontinuation in the study were manic

symptoms in 3 patients and severe rash in 1 patient.Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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In a double-blind, placebo-controlled multicenter study of fluoxetine, 219 child and adolescent outpatients (ages 8–17 years)

with major depression were randomly assigned to fluoxetine (20 mg/day) or placebo for an 8-week trial (Emslie et al. 2002).

The fluoxetine group showed statistically significant greater improvement in depression, as assessed by CDRS-R scores, than

did the placebo group. Fifty-two percent of patients treated with fluoxetine were rated as much or very much improved,

compared with 37% of patients treated with placebo. Remission rates were 39% in the fluoxetine group and 20% in the

placebo group. Headache was the only side effect that was reported more frequently in the group treated with fluoxetine than

in the group treated with placebo.

Fluoxetine alone, fluoxetine with CBT, CBT alone, and placebo were compared in a multicenter trial of 439 adolescent

outpatients with a diagnosis of major depression (Treatment for Adolescents with Depression Study [TADS] Team 2004).

Patients were randomly assigned to 12 weeks of fluoxetine (10–40 mg/day), fluoxetine (10–40 mg/day) with CBT, CBT

alone, or placebo. Compared with placebo, the combination of fluoxetine with CBT was significantly superior on CDRS-R

scores. Combination treatment with fluoxetine and CBT was significantly superior to fluoxetine alone and CBT alone.

Fluoxetine monotherapy was superior to CBT. Based on CGI scores of much or very much improved, the response rates were

71% for fluoxetine–CBT combination therapy, 61% for fluoxetine, 43% for CBT, and 35% for placebo. At the end of 12

weeks, only 23% of youths achieved remission (CDRS-R 28). Remission rates were significantly higher in the combination

group (37%) than in the fluoxetine (23%), CBT (16%), and placebo (17%) groups (Kennard et al. 2006).

Citalopram

There have been two controlled trials of citalopram, one with positive and one with negative results in the treatment of

depression in youth.

The efficacy of citalopram was demonstrated in a double-blind, placebo-controlled multicenter trial of 174 outpatient children

and adolescents (ages 7–17 years) with major depression (Wagner et al. 2004b). Patients were randomly assigned to

citalopram (dosage range = 20–40 mg/day; mean daily dose = 23 mg for children, 24 mg for adolescents) or placebo for an

8-week trial. The group treated with citalopram showed statistically significant greater improvement in depression (CDRS-R

scores) than did the placebo group. The response rates (CDRS-R score <28) were 36% for patients receiving citalopram and

24% for patients receiving placebo. The most frequent adverse events were headache, nausea, rhinitis, abdominal pain, and

influenza-like symptoms. The discontinuation rate for adverse events was 5% in both the group being treated with

citalopram and the group receiving placebo.

A European double-blind, placebo-controlled multicenter study (Knorring et al. 2006) of citalopram in 224 adolescents with

major depression failed to show superiority of citalopram to placebo on the primary efficacy measures of Schedule for

Affective Disorders and Schizophrenia for School-Age Children, Present Episode version (Kiddie-SADS-P; Chambers et al.

1985) and the Montgomery-Åsberg Depression Rating Scale (MADRS; Montgomery and Asberg 1979). Interpretation of these

findings is confounded by the allowed use of psychotherapy and other psychotropic medications during the course of the trial.

The most commonly reported adverse events were headache, nausea, and vomiting.

Paroxetine

There have been three double-blind, placebo-controlled trials of paroxetine for treatment of depression in children and

adolescents, all of which have negative findings on the primary outcome measure.

In a study of 275 adolescent outpatients (ages 12–18 years) with major depression, patients were randomly assigned to

paroxetine (dosage range = 20–40 mg/day; mean daily dose = 28 mg), imipramine (dosage range = 200–300 mg; mean daily

dose = 205 mg/day), or placebo for an 8-week trial (Keller et al. 2001). Although there was no statistically significant

difference among the treatment groups on the primary efficacy measure of reduction in the Hamilton Rating Scale for

Depression (Ham-D; Hamilton 1960) total score, there was statistically significant greater global improvement for the group

receiving paroxetine. Sixty-six percent of the group receiving paroxetine was much or very much improved, compared with

52% of the group receiving imipramine and 48% of the group receiving placebo. The most common side effects reported for

paroxetine were headache, nausea, dizziness, dry mouth, and somnolence, which (with the exception of somnolence)

occurred at rates similar to those in the placebo group. The most common side effects reported for imipramine were

dizziness, dry mouth, headache, nausea, and tachycardia.

Two hundred six children and adolescents (ages 7–17 years) with major depression were included in an 8-week double-blind,

placebo-controlled, randomized multicenter study of paroxetine treatment (Emslie et al. 2006). Patients were randomly

assigned to paroxetine (10–50 mg/day) or placebo. There was no statistically significant difference between

paroxetine-treated patients and placebo-treated patients on change from baseline in CDRS-R total score at endpoint. Adverse

events reported for paroxetine with an incidence of >5% and at least twice that of placebo were dizziness, cough, dyspepsia,

and vomiting.

A 12-week international placebo-controlled multicenter trial of paroxetine in 286 adolescents with major depression failed to

show superiority of paroxetine compared with placebo on change from baseline in MADRS or Schedule for Affective Disorders

and Schizophrenia for School-Aged Children—Lifetime version (Kiddie-SADS-L; Kaufman et al. 1997) total scores (Berard et

  1. 2006).

Sertraline

The efficacy of sertraline was assessed in two identical double-blind, placebo-controlled multicenter studies of 376 outpatient

children and adolescents with major depression (Wagner et al. 2003a). Patients were randomly assigned to sertraline

(dosage range = 50–200 mg per day; mean daily dose = 131 mg) or placebo for a 10-week trial. The group receiving

sertraline showed a statistically significant greater improvement in depression (CDRS-R scores) than did the placebo group.

Response rates (decrease >40% in baseline CDRS-R scores) were 69% in the group treated with sertraline and 59% in thePrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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group treated with placebo. The most common side effects in the group treated with sertraline were headache, nausea,

insomnia, upper respiratory tract infection, abdominal pain, and diarrhea. In a 24-week open follow-up of 226 of these

patients, continued improvement in depressive symptoms was shown with sertraline treatment. At endpoint, 86% of youths

met response criteria (Rynn et al. 2006).

Sertraline, CBT, and combined CBT plus medication were compared for the treatment of 73 adolescents with depressive

disorders (Melvin et al. 2006). All treatments showed statistically significant improvement on all outcome measures; there

were no significant advantages of combined treatment.

Escitalopram

There has been one controlled study of escitalopram that failed to demonstrate significant improvement on CDRS-R scores at

endpoint between escitalopram and placebo (Wagner et al. 2006a). In this study, 264 children and adolescents were

randomly assigned to escitalopram (10–20 mg/day) or placebo for 8 weeks. In a post hoc analysis of adolescent completers,

escitalopram showed significantly improved CDRS-R scores compared with placebo. Headache and abdominal pain were the

only adverse events reported in more than 10% of the patients in the escitalopram group.

Other Antidepressants

Venlafaxine

Two double-blind, placebo-controlled multicenter studies have evaluated the efficacy of venlafaxine extended-release (XR)

for the treatment of major depression in 165 and 169 child and adolescent outpatients, ages 7–17 years, respectively (Emslie

et al. 2007a, 2007b). Patients were randomly assigned to venlafaxine XR (37.5–225 mg/day) for 8-week trials. Both studies

were negative on the primary outcome measure of change from baseline to endpoint in the CDRS-R scores. A post hoc

analysis of the pooled data showed greater improvement on CDRS-R scores with venlafaxine XR for adolescents than for

children. The most common adverse events were anorexia and abdominal pain (Emslie et al. 2007a). In a 6-month open-label

follow-up study, it was found that most improvement with venlafaxine XR occurred in the first 6 weeks of treatment. At the

end of week 6, mean CDRS-R scores decreased from 60 to 36.3, and to 33.8 at 6 months (Emslie et al. 2007b).

Nefazodone

The efficacy of nefazodone was assessed in a double-blind, placebo-controlled multicenter trial of 195 adolescents (ages

12–17 years) with major depression (Rynn et al. 2002). Adolescents were randomly assigned to nefazodone (dosage range =

300–600 mg/day; mean daily dose = 444 mg) for an 8-week trial. The nefazodone group showed greater improvement than

the placebo group; however, this difference missed statistical significance ( P <0.055), based on the comparison of mean

CDRS-R score from baseline to endpoint between the group being treated with nefazodone and the group receiving placebo.

The most common side effects with nefazodone were headache, abdominal pain, nausea, vomiting, somnolence, and

dizziness, all of which were reported with greater frequency in the nefazodone group than in the group receiving placebo.

In a second double-blind, placebo-controlled multicenter trial of nefazodone in both children and adolescents (ages 7–17

years) with major depression, nefazodone did not differentiate from placebo (U.S. Food and Drug Administration 2004b).

Bupropion

There are no controlled trials of bupropion for the treatment of pediatric depression.

In an 8-week study of bupropion sustained release (SR) (dosage range = 100–400 mg/day; mean daily dose = 362 mg) for

treating 11 adolescents (ages 12–17 years) with major depression, 8 adolescents (79%) showed a 50% reduction in

depression score from baseline (Glod et al. 2000).

Bupropion SR was assessed in an 8-week open study for the treatment of comorbid depression and ADHD in 24 adolescents

(Daviss et al. 2001). Bupropion SR dosages were flexibly titrated up to 4 mg/kg taken twice daily (mean dose = 2.2 mg/kg in

A.M. and 1–7 mg/kg in P.M.). Global improvement was reported for 14 subjects (58%) for both depression and ADHD, 7

subjects (29%) for depression only, and 1 subject (4%) for ADHD only. Common side effects were headache, nausea, rash,

and irritability.

Mirtazapine

There have been two double-blind, placebo-controlled multicenter trials of mirtazapine for the treatment of child and

adolescent outpatients (ages 7–17 years) with major depression. These studies, which included 126 and 133 patients,

respectively, who were randomly assigned to mirtazapine (15–45 mg/day) or placebo for an 8-week trial, failed to

distinguish mirtazapine from placebo on the primary efficacy measure of change from baseline to endpoint in CDRS-R scores

(U.S. Food and Drug Administration 2004b).

Duloxetine

There are no published reports of the use of duloxetine for the treatment of major depression in children and adolescents.

There are two case reports of duloxetine treatment for pediatric chronic pain and comorbid major depressive disorder

(Meighen 2007) and one case report of duloxetine treatment for pediatric depression with pain and dissociative symptoms

(Desarkar et al. 2006) that described improvement in depressive symptoms.

Tricyclic Antidepressants

There have been eight double-blind, placebo-controlled studies of tricyclic antidepressants (TCAs) in children and

adolescents. No significant differences between TCA and placebo were found in any of these studies (Birmaher et al. 1998; B.

Geller et al. 1990, 1992; Keller et al. 2001; Kutcher et al. 1994; Kye et al. 1996; Puig-Antich et al. 1987; Tancer et al. 1992).Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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Response rates for TCA-treated patients ranged from 8% to 92% (B. Geller et al. 1990; Kye et al. 1996) and from 17% to

92% for patients treated with placebo (B. Geller et al. 1992; Kye et al. 1996). Several open trials with TCAs have reported a

response rate of 60%–80% (Ambrosini et al. 1994; B. Geller et al. 1986; Preskorn et al. 1982; Puig-Antich et al. 1979).

Monoamine Oxidase Inhibitors

One chart review found a response rate of 74% in 23 adolescents treated with monoamine oxidase inhibitors (MAOIs) who

had been unresponsive to TCAs. Dietary noncompliance was noted for 6 of these adolescents; 1 developed headache and

hypertension, and 1 developed myoclonic jerks (Ryan et al. 1988).

Suicidality and FDA Warning

In a combined analysis of 24 short-term placebo-controlled trials of antidepressant medications in child and adolescent major

depressive disorder, obsessive-compulsive disorder (OCD), or other psychiatric disorders, the risk of suicidality (suicidal

thinking and behavior) was 4%, twice the placebo rate (2%). There were no suicides in any of the clinical trials. The FDA

directed manufacturers to add a black box warning to the health professional label of antidepressant medications to describe

the increased risk of suicidal thoughts and behavior in children and adolescents being treated with antidepressant

medications and to emphasize the need for close monitoring of patients on the medications (U.S. Food and Drug

Administration 2004a). Parents and patients should be advised of the black box warning for antidepressant medication.

In a subsequent meta-analysis of 27 trials of pediatric major depression, the rates of suicidal ideation and attempts were 3%

in the youths treated with antidepressants and 2% in the youth who received placebo (Bridge et al. 2007). These

investigators reported that the number needed to treat was 10, whereas the number needed to harm was 112, and therefore

the benefits of antidepressants outweigh the potential risk from suicidal ideation or attempt.

A number of recent studies, in both the United States and Europe, have failed to demonstrate an association between

antidepressant use and youth suicide (Gibbons et al. 2006; Markowitz and Cuellar 2007; Simon et al. 2006; Søndergård et al.

2006). Noteworthy, there was an increase in the suicide rate in youth following the black box warning on antidepressants

(Hamilton et al. 2007). The FDA advisory has been associated with significant decreases in the rates of diagnosis and

treatment in pediatric depression (Libby et al. 2007).

Clinical Recommendations for Major Depressive Disorder

An evidence-based consensus medication algorithm for the treatment of childhood major depression has been recently

updated (Texas Children’s Medication Algorithm Project [TMAP]; Hughes et al. 2007). Based on research evidence and panel

discussion, four stages of medication treatment were identified:

Stage 1: SSRI (fluoxetine, citalopram, sertraline)

Stage 2: Alternate SSRI (fluoxetine, sertraline, citalopram, escitalopram, paroxetine [adolescents only if paroxetine])

Stage 2A (if partial response to SSRI): SSRI + lithium, bupropion, or mirtazapine

Stage 3: Different class of antidepressant medication (venlafaxine, bupropion, mirtazapine, duloxetine)

Stage 4: Reassess, treatment guidance

If a child fails to respond to treatment in one stage, the clinician should move to the next stage of treatment. It was

recommended by the consensus panel that dosage titration should occur in youths who do not have significant improvement

in symptoms by 4–6 weeks of treatment. Additional dose adjustments should be made at 8–10 weeks of treatment before

moving to another stage of treatment.

It was further recommended that antidepressants be continued for 6–12 months after symptom remission. At the time of

discontinuation of an antidepressant, the dose should be tapered slowly (i.e., no more than 25% per week). The typical

tapering and discontinuation period is 2–3 months.

BIPOLAR DISORDER

The prevalence of bipolar disorder in a community sample of adolescents was found to be 1% (Lewinsohn et al. 1995).

Although DSM-IV-TR criteria are used to diagnose bipolar disorder in youths, the clinical features in children may differ from

those in adolescents and adults. Children with bipolar disorder frequently exhibit mixed mania and rapid cycling (B. Geller et

  1. 2000). One-year recovery rates of 87% and relapse rates of 64% have been reported in children with bipolar disorder (B.

Geller et al. 2004). Despite the severity of bipolar disorder and its significant adverse effects on a child’s social, emotional,

and academic functioning, it has yet to be determined whether pharmacotherapy alters the course of the illness (Birmaher et

  1. 2006).

Lithium

Lithium is the only medication with FDA approval for the treatment of mania in adolescents.

There is only one small double-blind, placebo-controlled study of lithium treatment for adolescent bipolar disorder and

substance dependence (B. Geller et al. 1998). Twenty-five adolescent outpatients were randomly assigned to either lithium

(mean serum level = 0.97 mEq/L) or placebo for a 6-week trial. There was significantly greater improvement in global

functioning with lithium than with placebo. It was found that onset of bipolar disorder preceded substance dependence by

approximately 6 years. Side effects in the group treated with lithium were polyuria, thirst, nausea, vomiting, and dizziness.

There have been six controlled studies of lithium in the treatment of bipolar disorder in youths. In four of these double-blind

crossover studies, significant improvement was found with lithium, compared with placebo (DeLong and Nieman 1983; Gram

and Rafaelsen 1972; Lena 1979; McKnew et al. 1981). However, small sample size, diagnostic issues, and short treatment

duration limit these findings.Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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In a 4-week open trial, 100 adolescents with mania received lithium (mean serum level 0.93 mEq/L) (Kafantaris et al. 2003).

Forty-six of these youths also received concomitant antipsychotic medication. The lithium response rate was 55%, based on a

50% reduction in Young Mania Rating Scale (YMRS; Young et al. 1978) scores. The most common side effects were

polydipsia, polyuria, weight gain, gastrointestinal symptoms, headache, and tremor.

Kafantaris et al. (2004) conducted a controlled discontinuation study with 40 adolescents who had responded to lithium in

the open trial. Responders were randomly assigned to continue or discontinue lithium during a 2-week double-blind,

placebo-controlled phase. There was no statistically significant difference on symptom exacerbation rate between the lithium

(52.6%) and placebo (61.9%) groups. The investigators concluded that 4 weeks of lithium monotherapy may be insufficient

for symptom remission in adolescents.

The efficacy of lithium, divalproex, and carbamazepine was compared in a 6-week randomized, open-label trial of 42 children

and adolescents (ages 8–18 years) with bipolar disorder (Kowatch et al. 2000b). There were no significant differences in

response rates (defined as 50% reduction in YMRS from baseline to endpoint) among lithium, divalproex, and

carbamazepine. The lithium response rate was 38%, and the effect size was 1.06.

Lithium treatment for adolescents with bipolar depression was investigated in a 6-week open study of 27 adolescents. The

response rate ( 50% reduction in baseline CDRS-R score) was 48% (Patel et al. 2006).

Anticonvulsants

Divalproex

A 4-week double-blind, placebo-controlled multicenter trial of 150 youths (ages 10–17 years) with bipolar I disorder (mixed

or manic) failed to show a significant difference in scores on the YMRS from baseline to endpoint between divalproex

extended release (ER) and placebo (Abbott Laboratories, accessed 2007). The mean modal dose of divalproex ER was 1,286

  1. There were no statistically significant differences in adverse-event incidents between the divalproex ER and placebo

groups. Gastrointestinal symptoms were more commonly reported in divalproex ER than in placebo groups.

In a multisite open study of divalproex treatment for youths, 40 children and adolescents (ages 7–19 years) with bipolar

disorder received divalproex for a period of 2–8 weeks (Wagner et al. 2002). Sixty-one percent of the subjects showed >50%

improvement on the YMRS from baseline to endpoint. Twenty-three patients (58%) discontinued the study; of those, 16

patients had a comorbid diagnosis, including ADHD, conduct disorder, or oppositional defiant disorder (ODD). Headache,

nausea, vomiting, diarrhea, and somnolence were the most common side effects.

In the previously mentioned active-comparator study of lithium, divalproex, and carbamazepine, the response rate ( 50%

reduction in baseline YMRS scores) was 53% for divalproex. The effect size for divalproex was 1.63. The most common side

effects of divalproex were nausea and sedation (Kowatch et al. 2000b).

The efficacy of divalproex was compared with that of quetiapine in 50 hospitalized adolescents with bipolar I disorder, manic

or mixed (DelBello et al. 2006). Twenty-five adolescents were randomly assigned to divalproex (serum level 80–120 g/mL)

or quetiapine (400–600 mg/day). There were no significant differences between divalproex and quetiapine across the 28

days of the study. The CGI-BP-I overall response rate (CGI-BP-I overall score 2 at endpoint) was 40%, and the CGI-BP-I

mania response rate was 56% for divalproex, which were significantly lower than the rates for quetiapine. The rate of

remission (YMRS 12) for divalproex was 28%.

Carbamazepine

In a 6-week active-comparator study of lithium, divalproex, and carbamazepine (Kowatch et al. 2000b), carbamazepine had a

response rate (defined as 50% reduction in YMRS from baseline to endpoint) of 38% (vs. 38% for lithium and 53% for

divalproex) and an effect size of 1.00 (vs. 1.6 for lithium and 1.63 for divalproex). The most common side effects of

carbamazepine were sedation, nausea, dizziness, and rash.

Oxcarbazepine

There is one double-blind, placebo-controlled multicenter trial of oxcarbazepine for the treatment of youths with bipolar I

disorder, manic or mixed, that failed to show superiority of oxcarbazepine to placebo. One hundred sixteen youths (ages

7–18 years) were randomly assigned to oxcarbazepine (mean dosage = 1,515 mg/day) or placebo for a 7-week trial (Wagner

et al. 2006b). There was no significant difference in YMRS scores at endpoint between the oxcarbazepine and placebo groups.

The most common side effects in the oxcarbazepine-treated patients were dizziness, nausea, somnolence, diplopia, fatigue,

and rash.

Topiramate

A double-blind, randomized, placebo-controlled multicenter study assessing the efficacy of topiramate treatment in children

and adolescents with acute mania was designed as a 200-patient study but was terminated after randomizing 56 patients

(ages 6–17 years) when adult mania trials failed to show efficacy (DelBello et al. 2005). Patients were titrated to 400

mg/day (mean dosage = 278 mg/day). Over a 4-week period, no significant difference was found between the topiramate

and placebo groups. The most common adverse events in the topiramate group included decreased appetite, nausea,

diarrhea, paresthesias, and somnolence.

Lamotrigine

In a 12-week open-label single-center outpatient study in adolescents diagnosed with bipolar disorder I, depressed or mixed,

23 patients entered, and 13 completed the trial (Swope et al. 2004). The mean dosage of lamotrigine was 241 mg/day. There

was improvement on depression and mania ratings at study endpoint. No subjects discontinued for adverse events related toPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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the study drug.

Lamotrigine as monotherapy or adjunctive treatment for 20 adolescents with bipolar depression was assessed in an 8-week

open-label trial (Chang et al. 2006). The mean dosage of lamotrigine was 132 mg/day. Seven adolescents were also taking

other psychotropic medications. The response rate (CGI-I 2) was 84%, and the remission rate (CDRS-R 28 and CGI-S 2)

was 58%. The most common side effects were headache, fatigue, nausea, sweating, and difficulty sleeping. There were no

significant rashes during the trial.

The use of lamotrigine as adjunctive therapy for treatment-refractory bipolar depression in adolescents was assessed in an

open-label study (Kusumakar and Yatham 1997). Twenty-two adolescents whose bipolar depression was refractory to

treatment with a combination of divalproex plus another mood stabilizer and antidepressant were treated with lamotrigine

added to divalproex for 6 weeks. Sixteen of the adolescents (72%) had a positive response by week 6.

Atypical Antipsychotics

Olanzapine

There is one reported double-blind, placebo-controlled multicenter study of olanzapine (2.5–20 mg/day) for the treatment of

adolescent outpatients with bipolar I disorder, mixed or manic (Tohen et al. 2007). Adolescents were randomly assigned to

olanzapine (n = 107) or placebo (n = 54) for 3 weeks. Response rates (defined as 50% decrease in YMRS and a CGI-BP

mania score 3) were significantly greater for the olanzapine group (44.8%) than for the placebo group (18.5%). Remission

rates (defined as YMRS <12 and CGI-BP mania score 3) were significantly greater for the olanzapine (35.2%) than for the

placebo (11.1%) group. Adverse effects in the olanzapine group were hyperprolactinemia, weight gain (mean = 3.7 kg),

somnolence, and sedation.

In an open study, 23 children (ages 5–14 years) with bipolar disorder received olanzapine (2.5 mg/day) for 8 weeks (Frazier

et al. 2001). Using a response definition of 30% or greater improvement on the YMRS, the response rate was 61%. No

significant side effects except weight gain (mean = 5 kg) were reported.

The use of olanzapine in preschoolers is an area of recent interest. An 8-week open-label study of olanzapine and risperidone

in children (ages 4–6 years) with bipolar disorder (manic, mixed, or hypomanic) was conducted by Biederman et al. (2005b).

Fifteen children were treated with olanzapine (mean dosage = 6.3 mg/day). The response rate (CGI-I 2 or YMRS reduction

30%) was 53% for olanzapine. Mean weight increase was 3.2 kg for olanzapine-treated children. The most common side

effects of olanzapine were increased appetite, cold symptoms, headache, and sedation.

Risperidone

There are no data available from controlled trials of risperidone for the treatment of bipolar disorder in youth.

An 8-week open-label study of risperidone (mean dosage = 1.25 mg/day) for 30 youths (ages 6–17 years) with bipolar

disorder (manic, mixed, or hypomanic) was conducted by Biederman et al. (2005c). Twenty-two of 30 youths completed the

study. The response rate (CGI-I in mania score 2 at endpoint) was 70%. Significant side effects included weight increase

(mean 2.1 kg) and a fourfold increase in prolactin levels from baseline.

In the previously mentioned open-label study of preschoolers with bipolar disorder (Biederman et al. 2005b), 16 children

received risperidone (mean dosage = 1.4 mg/day). The response rate (CGI-I 2 or YMRS reduction of 30%) was 69% in the

risperidone group. Weight increase was a mean of 2.2 kg in the risperidone-treated children. The most common side effects

were increased appetite, cold symptoms, headaches, and sedation.

Quetiapine

The efficacy of quetiapine was compared with divalproex in 50 hospitalized adolescents with bipolar I disorder, manic or

mixed (DelBello et al. 2006). Twenty-five adolescents were randomly assigned to quetiapine (400–600 mg/day). There was

no statistically significant difference in YMRS scores across the 28 days of the study between quetiapine and divalproex.

Response rates of 72% (CGI-BP-I overall score 2) and of 84% (CGI-BP-I mania score 2) for quetiapine were significantly

higher than those for divalproex. The rate of remission (YMRS 12) was 60% in the quetiapine group. Improvement occurred

more rapidly in the quetiapine group than in the divalproex group.

Aripiprazole

There are no published controlled studies of aripiprazole treatment for bipolar disorder in children and adolescents.

Three chart reviews reported clinical global improvement in symptoms for youth with bipolar disorder who were treated with

aripiprazole (Barzman et al. 2004; Biederman et al. 2005a; Gibson et al. 2007).

Ziprasidone

There are no data available from controlled trials of ziprasidone for the treatment of bipolar disorder in youth.

In a study of 30 children and adolescents with bipolar disorder given open-label ziprasidone (mean dosage = 56 mg/day) for

a mean treatment duration of 359 days, 70% of patients responded to ziprasidone (CGI-I score of much or very much

improved) (Barnett and Cohen 2004).

The comparative efficacy of atypical antipsychotics was assessed in youths with mania (Biederman 2005). In this study, 21

youths received ziprasidone (mean dosage = 56 mg/day) in an 8-week open-label trial. There were significant reductions in

YMRS scores for all atypical antipsychotics, with no significant difference among them. The CGI 2 response rate was 57% for

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Combination Treatment

Some children may not respond to initial monotherapy treatment or may need combination treatment over the course of the

illness. For example, following acute 6-week treatment with one mood stabilizer, Kowatch et al. (2000a) reported that 20 of

35 youths (58%) required additional psychotropic medication over the next 16 weeks. The response rate to combination

treatment with two mood stabilizers was high (80%) for those youths who did not respond to monotherapy.

The effectiveness of combination lithium and divalproex sodium was assessed in an open trial (Findling et al. 2003a). Ninety

youths (ages 5–17 years) with bipolar I or II disorder were treated for up to 20 weeks with divalproex sodium (mean blood

level = 79.8 g/mL) and lithium (mean blood level = 0.9 mmol/L). The clinical remission rate (defined as contiguous weekly

ratings of YMRS 12.5, CDRS-R 40, Children’s Global Assessment Scale [CGAS] 51, clinical stability, and no mood cycling)

was 42%.

Lithium and adjunctive haloperidol were used to treat five adolescents with psychotic mania (Kafantaris et al. 2001b). In this

trial, haloperidol was discontinued within 1 week of therapeutic lithium levels. All these adolescents had a rapid return to

symptoms, which responded to restarting haloperidol.

In a larger open trial (Kafantaris et al. 2001a), 28 acutely manic adolescents with psychotic features received combination

lithium and antipsychotic medication for 4 weeks. At the end of 4 weeks, only 14 (50%) were clinically stable enough to have

the antipsychotic medication discontinued. On lithium monotherapy, 8 adolescents remained stable over a 4-week period, and

6 adolescents had an exacerbation of symptoms. These investigators concluded that adjunctive antipsychotic medication

needs to be continued for more than 4 weeks for most adolescents with psychotic mania.

The efficacy of combination risperidone and lithium or divalproex sodium was assessed in a 6-month open-label trial

(Pavuluri et al. 2004). Thirty-seven youths (ages 5–18 years) with bipolar I disorder (manic or mixed) received risperidone

(mean dosage = 0.75 mg) plus divalproex sodium (mean serum level = 106 g/mL) or risperidone (mean dosage = 0.70 mg)

plus lithium (mean serum level = 0.9 mEq/L). Response rates ( 50% reduction in baseline YMRS scores) were similar for

both combinations: 80% for divalproex sodium plus risperidone, and 82.4% for lithium plus risperidone. There were no

significant differences between the groups in safety and tolerability.

Risperidone augmentation of lithium nonresponders was assessed in a 1-year open-label study (Pavuluri et al. 2006).

Twenty-one of 38 youths (ages 4–17 years) who failed to respond to lithium monotherapy or relapsed after initial response

were given risperidone (mean dosage = 0.99 mg) for 11 months. Response rates in the lithium plus risperidone group were

85.7%.

In a double-blind, placebo-controlled study of quetiapine, 30 adolescents with bipolar disorder received divalproex (20

mg/kg) and were randomly assigned to adjunctive quetiapine (mean daily dose = 432 mg) or placebo for 6 weeks (DelBello

et al. 2002). Response rates (YMRS reduction from baseline 50%) were significantly higher in the group receiving

divalproex and quetiapine (87%) than in the group receiving divalproex and placebo (53%).

Maintenance Treatment

There is only one reported maintenance study for children and adolescents with bipolar disorder. Sixty youths who had

responded to a combination of lithium and divalproex in a 20-week trial were randomly assigned in a double-blind trial to

either lithium or divalproex for 18 months (Findling et al. 2005). There was no significant difference in the time to relapse

between the groups (median days: divalproex 112, lithium 114).

Clinical Recommendations for Bipolar Disorder

Treatment guidelines were developed by expert consensus and review of the available treatment literature for children and

adolescents (ages 6–17 years) with bipolar I disorder, manic or mixed (Kowatch et al. 2005). Six stages were identified:

Stage 1: Monotherapy with mood stabilizer or atypical antipsychotic (lithium, valproate, carbamazepine, olanzapine, quetiapine,

risperidone)

Stage 2: Switch monotherapy agent (drug class not tried in stage 1)

Stage 3: Switch monotherapy agent (drug class not tried in stage 1 or 2) OR combination treatment (2 agents)

Stage 4: Combination treatment (2 agents) OR combination treatment (3 agents)

Stage 5: Alternative monotherapy (drugs not tried in stages 1, 2, 3)

Stage 6: Electroconvulsive therapy (adolescents) or clozapine

If a child fails to respond to treatment in one stage, the clinician should move to the next stage of treatment. For treatment of

bipolar I disorder, manic or mixed with psychosis, it was recommended that initial treatment be a mood stabilizer plus an

atypical antipsychotic. A minimum of 4–6 weeks at therapeutic blood levels and/or adequate doses for each medication was

recommended. Following sustained remission of at least 12–24 months, medication taper should be considered.

ANXIETY DISORDERS

Obsessive-Compulsive Disorder

OCD has a prevalence rate of 2%–4% in youths (Douglass et al. 1995; Zohar 1999). The DSM-IV-TR criteria for OCD are the

same in children and adults, with the exception that children may not recognize that their obsessions or compulsions are

unreasonable (American Psychiatric Association 2000). The course of OCD in youths is chronic. In a 2- to 7-year follow-up of

54 children and adolescents with OCD, 23 subjects (43%) continued to meet diagnostic criteria for OCD, and only 3 subjects

(6%) achieved complete remission (Leonard et al. 1993).

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Four medications have received FDA approval for the treatment of OCD in children and adolescents: clomipramine ( 10 years

old), fluvoxamine ( 7 years old), sertraline ( 6 years old), and fluoxetine ( 7 years old).

Fluvoxamine

The safety and efficacy of fluvoxamine were evaluated in a double-blind, placebo-controlled multicenter study (Riddle et al.

2001). One hundred twenty outpatient children and adolescents (ages 8–17 years) with OCD were randomly assigned to

fluvoxamine (dosage range = 50–200 mg/day; mean daily dose = 165 mg) or placebo for a 10-week trial. Patients who did

not respond after 6 weeks could discontinue the double-blind phase and enter an open-label trial of fluvoxamine. Mean

CY-BOCS scores were significantly different between the group treated with fluvoxamine and the group treated with placebo

at weeks 1, 2, 3, 4, 6, and 10. Response rates (>25% reduction in CY-BOCS scores) were 42% in the group being treated

with placebo. Adverse events occurring at a placebo-adjusted frequency of >10% were insomnia and asthenia.

To assess the safety and effectiveness of fluvoxamine in the long-term treatment of pediatric OCD, 99 patients who

completed the acute double-blind, placebo-controlled fluvoxamine study (Riddle et al. 2001) participated in a 1-year

open-label extension study (Walkup et al. 1998). Fluvoxamine dosages were titrated to 200 mg/day over the first 4 weeks.

Patients experienced a 42% reduction in CY-BOCS scores by the end of long-term treatment. Clinical improvement plateaued

at about 6 months of treatment. The most common side effects were insomnia, asthenia, nausea, hyperkinesias, and

nervousness. There were no clinically significant laboratory or vital sign abnormalities.

Sertraline

In a double-blind, placebo-controlled multicenter study, 187 children and adolescents (ages 6–17 years) with OCD were

randomly assigned to sertraline or placebo (March et al. 1998). Sertraline dosages were titrated to a maximum of 200

mg/day during the first 4 weeks of the trial, and these dosages were maintained for an additional 8 weeks. The mean dosage

of sertraline was 167 mg/day at endpoint. Compared with patients receiving placebo, patients receiving sertraline showed

significantly greater improvement on the CY-BOCS, the NIMH Global Obsessive Compulsive Rating Scale (NIMH GOCS), and

the Clinical Global Impression Severity of Illness (CGI-S) and Improvement (CGI-I) rating scales. Forty-two percent of

patients in the sertraline group and 26% of patients in the placebo group were rated as very much or much improved. Side

effects of insomnia, nausea, agitation, and tremor occurred significantly more often in the group receiving sertraline than in

the group receiving placebo.

To assess the long-term safety and effectiveness of sertraline for pediatric OCD, 137 patients who completed the 12-week

double-blind, placebo-controlled sertraline study (March et al. 1998) were given open-label sertraline (mean dosage = 120

mg/day) in a 52-week extension study. Significant improvement was found on CY-BOCS, NIMH GOCS, and CGI scores. Rates

of response (defined as >25% decrease in CY-BOCS and a CGI-I score of 1 or 2) were 72% for children and 61% for

adolescents (Cook et al. 2001). Full remission (defined as a CY-BOCS score >8) was achieved in 47% of patients, and an

additional 25% achieved partial remission (CY-BOCS score <15 but >8) (Wagner et al. 2003b). The most common side effects

were headache, nausea, diarrhea, somnolence, abdominal pain, hyperkinesias, nervousness, dyspepsia, and vomiting. There

were no clinically significant electrocardiogram (ECG), vital sign, or laboratory abnormalities.

The relative and combined efficacy of sertraline and CBT was assessed in a 12-week trial for 112 children and adolescents

(ages 7–17 years) with OCD (Pediatric OCD Treatment Study [POTS] Team 2004). Patients were randomly assigned to

sertraline, CBT, combined sertraline and CBT, or placebo. Combined treatment was significantly superior to CBT alone and

sertraline alone, which did not differ from each other.

Group cognitive-behavioral therapy (GCBT) was compared with sertraline treatment for OCD in a randomized trial with 40

youths (ages 9–17 years) (Asbahr et al. 2005). Both GCBT and sertraline yielded significant improvement in CY-BOCS scores

after 12 weeks of treatment. After a 9-month follow-up period, GCBT-treated patients had a significantly lower rate of relapse

compared with the sertraline-treated group (5.3% vs. 50%, respectively).

Paroxetine

The efficacy and safety of paroxetine were assessed in a double-blind, placebo-controlled multicenter study of 203 outpatient

children and adolescents (ages 7–17 years) with OCD (D. A. Geller et al. 2004). Patients were randomly assigned to

paroxetine (dosage range = 10–50 mg/day; mean daily dose = 23 mg) or placebo for a 10-week trial. There was a

statistically significant greater reduction in CY-BOCS scores from baseline to endpoint in patients treated with paroxetine

than in patients treated with placebo. Response rates (>25% reduction in CY-BOCS scores) were 64.9% in the

paroxetine-treated patients and 41.2% in the placebo-treated patients. The most common adverse effects in the paroxetine

group were headache, abdominal pain, nausea, respiratory disorder, somnolence, hyperkinesias, and trauma.

The efficacy of paroxetine in 335 outpatients (ages 7–17 years) with OCD was assessed in a 16-week open-label multicenter

study of paroxetine (10–60 mg/day), followed by double-blind randomization of responders to paroxetine or placebo for an

additional 16 weeks (Emslie et al. 2000). The rate of response (defined as >25% reduction in CY-BOCS scores) was 68.7% in

the open-label phase. No significant differences in response rates were found between the group receiving paroxetine and

the group receiving placebo in the randomization phase. However, fewer patients receiving paroxetine relapsed than did

patients receiving placebo (34.7% and 43.9%, respectively).

A post hoc analysis of the study by Emslie et al. (2000) found that the response rates in patients with comorbid ADHD, tic

disorder, or ODD (56%, 53%, and 39%, respectively) were significantly lower than those in patients without comorbid

disorders (75%). Behavioral adverse events, such as insomnia, nervousness, and hyperkinesia, were also significantly more

frequent in patients with psychiatric comorbidity (D. A. Geller et al. 2001a).

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The safety and efficacy of fluoxetine were assessed in a 13-week double-blind, placebo-controlled multicenter trial (D. A.

Geller et al. 2001b). One hundred three children and adolescents (ages 7–17 years) with OCD were randomly assigned in a

2:1 ratio to either fluoxetine (dosage range = 10–60 mg/day; mean daily dose = 24.6 mg) or placebo. The group treated with

fluoxetine showed a statistically significant reduction in OCD severity compared with the group treated with placebo, as

assessed by CY-BOCS scores. Rates of response (defined as >40% reduction in CY-BOCS score) were 49% in the fluoxetine

group and 25% in the placebo group. There were no significant differences in treatment-emergent adverse events between

the fluoxetine and placebo groups. There were significant differences for change in weight and blood pressure between the

groups, in the direction of mild weight loss and slight decrease in blood pressure for the fluoxetine group.

In post hoc subgroup analyses of the study by D. A. Geller et al. (2001b), no predictive factors in response to fluoxetine

treatment for pediatric OCD were found (D. A. Geller et al. 2001c). There were no statistically significant differences in

treatment effect between children vs. adolescents, females vs. males, patients with vs. without a family history of depression

or OCD, or patients with age at onset <7 years vs. 7 years.

Fluoxetine was compared with placebo in a controlled trial in 43 youths with OCD (Liebowitz et al. 2002). It was found that

after 16 (but not 8) weeks of treatment, the fluoxetine group had significantly lower CY-BOCS scores than the placebo group.

These investigators concluded that fluoxetine’s full effect took longer than 8 weeks to develop.

In a smaller double-blind crossover trial of fixed-dosage fluoxetine (20 mg/day) and placebo, 14 children and adolescents

(ages 8–15 years) with OCD participated in a 20-week trial with crossover at 8 weeks (Riddle et al. 1992). CY-BOCS scores

decreased significantly more after 8 weeks of treatment with fluoxetine than after treatment with placebo (44% and 27%,

respectively). The most frequently reported side effects were insomnia, fatigue, motoric activation, and nausea.

Citalopram

Twenty-three child and adolescent outpatients (ages 9–18 years) with OCD were administered open-label citalopram (dosage

range = 10–40 mg/day; mean daily dose = 37 mg) in a 10-week trial (Thomsen 1997). There was a statistically significant

improvement in CY-BOCS scores from baseline to endpoint. Over 75% of youths showed a moderate to marked improvement

in OCD symptoms. Adverse effects were minimal and transient.

In an 8-week open-label citalopram study of 15 youths (ages 6–17 years) with OCD, 14 patients showed significant

improvement in CY-BOCS scores from baseline to endpoint. Sedation (n = 1) and insomnia (n = 1) were reported in the first

week of treatment (Mukaddes and Abali 2003).

In a long-term, open study of 30 adolescents with OCD, citalopram (dosage range = 20–70 mg/day; mean daily dose = 46.5

  1. mg) was administered for 1–2 years (Thomsen et al. 2001). There was a significant reduction in CY-BOCS scores from

baseline to assessment at 2 years. No serious adverse events were reported, and the most common side effects were

sedation, sexual dysfunction, and weight gain.

Clomipramine

Clomipramine has been shown to be efficacious in the treatment of pediatric OCD in two double-blind, placebo-controlled

trials. In the first study (Flament et al. 1985), 19 children (ages 10–18 years) with OCD were randomly assigned to

clomipramine (dosage range = 100–200 mg/day; mean daily dose = 141 mg) or placebo for 5 weeks. Significant

improvement in observed and self-reported obsessions and compulsions was found for patients who received clomipramine.

The most common side effects were tremor, dry mouth, dizziness, and constipation. One patient had a grand mal seizure.

In an 8-week double-blind, placebo-controlled multicenter study of 60 children and adolescents (ages 10–17 years) with

OCD, it was found that patients who received clomipramine (up to 200 mg/day) had significantly greater reductions in scores

on the Children’s Yale-Brown Obsessive Compulsive Scale (CY-BOCS; Goodman et al. 1991) compared with the placebo group

(37% and 8%, respectively). Forty-seven patients continued in a 1-year open-label extension trial, and effectiveness was

maintained with long-term treatment. The most frequent side effects were dry mouth, somnolence, dizziness, fatigue, tremor,

headache, constipation, and anorexia (DeVeaugh-Geiss et al. 1992).

In a 10-week double-blind crossover trial of clomipramine and desipramine for 48 children and adolescents (ages 7–19

years) with OCD, clomipramine was shown to be significantly superior to desipramine in reducing obsessive-compulsive

symptoms (Leonard et al. 1989). Sixty-four percent of patients who received clomipramine as their first active treatment

showed some signs of relapse during treatment with desipramine.

Leonard et al. (1991) further assessed whether patients who were maintained on long-term clomipramine would relapse

following double-blind desipramine substitution. Twenty-six children and adolescents with OCD who received maintenance

treatment (mean duration = 17.1 months; range = 4–32 months) entered an 8-month double-blind desipramine substitution

trial. Eight of 9 patients (89%) in the desipramine group and 2 of 11 patient (18%) in the clomipramine group relapsed

during the comparison period.

Anxiolytics

Buspirone

In a case report of an 11-year-old girl with treatment-refractory OCD, buspirone (up to 300 mg/day) over a 3-week period

was noted to produce a substantial reduction in obsessive-compulsive symptoms (Alessi and Bos 1991).

Benzodiazepines

A case report of a 14-year-old boy with OCD who received clonazepam (up to 2 mg/day) found a marked decrease in

obsessive-compulsive symptoms over an 11-week period (Ross and Pigott 1993). A 16-year-old boy with OCD who had failedPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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to respond to prior trials of clomipramine, fluoxetine, fluvoxamine, and buspirone augmentation showed a 75% improvement

in obsessive-compulsive symptoms when his fluoxetine dosage (60 mg/day) was augmented with clonazepam (4 mg/day)

(Leonard et al. 1994).

Atypical Antipsychotic Augmentation

Adjunctive risperidone ( 2 mg daily) was investigated in an open trial for 17 adolescents with OCD who failed to respond to

two serotonin reuptake inhibitor monotherapy trials. A significant reduction in CY-BOCS scores was reported (Thomsen

2004).

Aripiprazole augmentation of CBT was found to be effective in the case of an adolescent who had a partial response to

combined CBT and sertraline (Storch et al. 2008).

Generalized Anxiety Disorder

The prevalence of generalized anxiety disorder (GAD) in children and adolescents is estimated to range from 2.9% to 7.3%

(J. C. Anderson et al. 1987; Kashani and Orvaschel 1988). Children with GAD have excessive anxiety and worry about several

events or activities (e.g., school performance), have difficulty controlling the worry, and have at least one associated

symptom, such as restlessness, fatigue, concentration difficulties, irritability, muscle tension, and sleep disturbance

(American Psychiatric Association 2000). Most symptoms of childhood overanxious disorder were subsumed within GAD.

Therefore, overanxious disorder was eliminated from DSM-IV (American Psychiatric Association 1994). The course of GAD in

youths tends to be chronic (Keller et al. 1992).

Venlafaxine

The efficacy and safety of venlafaxine XR were evaluated in an 8-week double-blind, placebo-controlled multicenter trial

(Kunz et al. 2002). One hundred fifty-eight children and adolescents (ages 6–17 years) with GAD were randomly assigned to

venlafaxine XR (dosage range = 37.5–225 mg/day) or placebo. There was a statistically significant greater reduction in

anxiety scores in the venlafaxine XR group compared with the placebo group. Forty-nine patients (64%) receiving

venlafaxine were much or very much improved, compared with five patients (6%) receiving placebo. The most common

treatment-related adverse events were hyperkinesia, somnolence, and epistaxis.

Sertraline

Twenty-two children and adolescents (ages 5–17 years) with GAD were randomly assigned to sertraline or placebo in a

9-week double-blind trial (Rynn et al. 2001). The maximum dosage of sertraline was 50 mg/day. Significant differences in

favor of sertraline over placebo were observed on Hamilton Anxiety Scale (Ham-A; Hamilton 1959) scores and on CGI-S and

CGI-I ratings. Side effects found to be more common (but not statistically significant so) with sertraline than with placebo

were dry mouth, drowsiness, leg spasm, and restlessness.

Buspirone

There have been two open studies of buspirone for the treatment of GAD in youths. In an open study of adolescents with

GAD, a significant decrease in anxiety clinical ratings after 6 weeks of treatment with buspirone (mean dosage range =

15–30 mg/day) was reported (Kutcher et al. 1992). Simeon (1993) reported the results of an open trial of buspirone for 13

children with anxiety disorders; 9 of these patients had DSM-III-R (American Psychiatric Association 1987) overanxious

disorder as a primary or secondary diagnosis. Patients received buspirone (maximum dosage = 30 mg/day) over 4 weeks.

Significant improvement in anxiety was found on clinical ratings and parent, teacher, and patient reports. Mild and transient

side effects were reported, including sleep difficulties, tiredness, nausea, stomachaches, and headaches.

Benzodiazepines

A few studies have demonstrated some effectiveness of high-potency benzodiazepines in treating children and adolescents

with GAD. Twelve patients (ages 8–16 years) with a DSM-III-R diagnosis of overanxious disorder or avoidant disorder

received alprazolam (maximum dosage = 0.5–1.5 mg/day) in a 4-week open trial (Simeon and Ferguson 1987). Significant

improvement in anxiety was found on clinical ratings and parent questionnaires. Parental reports indicated a decrease in the

frequency and severity of sleep problems. The most commonly reported adverse effects were initial daytime sleepiness,

agitation, headaches, and nausea. No significant changes in blood pressure, pulse, or respiration were observed.

This open study was followed by a double-blind, placebo-controlled study of alprazolam in the treatment of 30 children (ages

8–16 years) with a DSM-III-R diagnosis of overanxious disorder ( n = 21) or avoidant disorder (n = 9) (Simeon et al. 1992).

Patients were randomly assigned to alprazolam (dosage range = 0.5–3.5 mg/day; mean daily dose = 1.57 mg) or placebo for

a 4-week trial. On the basis of global ratings of improvement, alprazolam was superior to placebo, but this difference was not

statistically significant. Side effects were mild and included dry mouth and fatigue. No rebound or withdrawal symptoms

occurred, and no adverse cognitive effects were noted.

Social Anxiety Disorder

The prevalence of social anxiety disorder (social phobia) is estimated to range from 0.9% to 7% of children and adolescents

(J. C. Anderson et al. 1987; Stein et al. 2001). The diagnostic criteria for social anxiety disorder in children and adolescents

are the same as the diagnostic criteria used in adults (American Psychiatric Association 2000). Social anxiety disorder in

youths is a chronic condition, and it increases the risk of depression (Stein et al. 2001). Social anxiety disorder during

adolescence has been shown to persist into adulthood (Pine et al. 1998).

Selective Serotonin Reuptake InhibitorsPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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Paroxetine

The efficacy and safety of paroxetine were evaluated in a 16-week double-blind, placebo-controlled multicenter trial in 322

outpatient children and adolescents (ages 8–17 years) with social anxiety disorder (Wagner et al. 2004a). Paroxetine was

significantly superior to placebo, with rates of response (defined as CGI-I score = 1 or 2) of 77.6% and 38.3%, respectively.

Side effects more common with paroxetine than with placebo were insomnia, decreased appetite, and vomiting.

Sertraline

Fourteen outpatient children and adolescents (ages 10–17 years) with a diagnosis of social anxiety disorder received

sertraline (dosage range = 100–200 mg/day; mean daily dose = 123 mg) in an 8-week open trial (Compton et al. 2001). Five

of the patients (36%) were much or very much improved, and four of the patients (29%) had a partial response by the end of

the 8-week trial. A significant clinical response was noted by week 6. Sertraline was well tolerated, and no patient developed

significant behavioral disinhibition or mania (Compton et al. 2001).

Citalopram

Chavira and Stein (2002) investigated the effectiveness of a combined psychoeducational and pharmacological treatment

program for youths with social anxiety disorder. Twelve children and adolescents (ages 8–17 years) with social anxiety

disorder received citalopram (mean daily dose = 35 mg) and eight 15-minute counseling sessions over a 12-week period. On

the basis of clinical global ratings of change, 41.7% of youths ( n = 5) were very much improved, and 41.7% of youths (n =

5) were much improved.

Nefazodone

A 15-year-old boy with social anxiety who was treated with nefazodone (up to 350 mg/day) over a 5-month period had

resolution of social anxiety symptoms (Mancini et al. 1999).

Buspirone

A 16-year-old boy with social anxiety disorder and a mixed personality disorder with predominantly schizotypal features was

treated with buspirone (up to 20 mg/day). At the end of 12 days of buspirone treatment, he was noted to have a significant

reduction in anxiety, which persisted over a 1-year follow-up period (Zwier and Rao 1994).

Selective Mutism

The prevalence of selective mutism in children is estimated to be less than 1% (Dow et al. 1995). Selective mutism is

characterized by an absence of speech in at least one specific social situation, usually school, despite the child’s ability to

speak in other situations (American Psychiatric Association 2000). Selective mutism has been viewed as a variant of social

anxiety disorder (Black and Uhde 1992).

Selective Serotonin Reuptake Inhibitors

Fluoxetine

Fifteen children and adolescents (ages 6–11 years) with selective mutism were randomly assigned to fluoxetine (dosage

range = 12–27 mg/day; mean daily dose = 21.4 mg) or placebo for a 12-week trial (Black and Uhde 1994). Significant

improvements on ratings of selective mutism were observed in both fluoxetine-treated and placebo-treated subjects. The

group treated with fluoxetine showed significantly more improvement on parent ratings of mutism change and global change

than did the group receiving placebo. However, most patients in the study continued to be very symptomatic at study end.

Side effects were minimal and not significantly different between the groups.

In a 9-week open trial of fluoxetine (dosage range = 10–60 mg/day; mean daily dose = 28.1 mg) in 21 children (ages 5–14

years) with selective mutism, 76% of patients showed improvement, with decreased anxiety and increased speech in public

settings (Dummit et al. 1996).

In case reports of a 4-year-old girl (Wright et al. 1995) and a 12-year-old girl (Black and Uhde 1992) with selective mutism,

fluoxetine treatment resulted in clinically significant improvement of symptoms.

Fluvoxamine

A 6-year-old girl was reported to have resolution of symptoms of selective mutism when treated with fluvoxamine (100

mg/day) (Lafferty and Constantino 1998).

Monoamine Oxidase Inhibitors

Phenelzine

Case studies of five children treated with phenelzine (30–60 mg/day) reported positive response (Golwyn and Sevlie 1999;

Golwyn and Weinstock 1990). Weight gain was the most common side effect.

Separation Anxiety Disorder

The prevalence of separation anxiety in children is estimated to be 3.5% (J. C. Anderson et al. 1987). Children with

separation anxiety disorder have excessive anxiety and worry about separation from home or from a person to whom they

are attached (American Psychiatric Association 2000). School refusal or school phobia may be a symptom of separation

anxiety disorder. A long-term follow-up of children with school phobia found that in adulthood, these individuals lived with

their parents more often, had fewer children, and more psychiatric consultation than did a general population comparisonPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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group (Flakierska-Praquin et al. 1997).

Tricyclic Antidepressants

Imipramine

Imipramine has been the most studied medication for the treatment of separation anxiety disorder, and the treatment results

have been mixed. In a 6-week double-blind, placebo-controlled trial, 35 children with school phobia were randomly assigned

to imipramine (dosage range = 100–200 mg/day; mean daily dose = 152 mg) or placebo (Gittelman-Klein and Klein 1971).

All children received concurrent behavioral treatment. Imipramine treatment was significantly superior to placebo in rates of

school return (81% and 47%, respectively). However, in another controlled study of imipramine for separation anxiety

disorder (Klein et al. 1992), no significant superiority was found for imipramine (dosage range = 75–275 mg/day; mean daily

dose = 153 mg), compared with placebo, in reduction of anxiety symptoms. The most frequent imipramine side effect was

irritability or angry outbursts.

Imipramine was compared with alprazolam in an 8-week controlled study in which 24 children and adolescents (ages 7–17

years) with school refusal were randomly assigned to imipramine (dosage range = 150–200 mg/day; mean daily dose =

164.3 mg), alprazolam (dosage range = 1–3 mg/day; mean daily dose = 1.8 mg), or placebo (Bernstein et al. 1990). There

was a significant reduction in anxiety ratings from baseline to endpoint in both groups treated with medication, compared

with the group receiving placebo. Side effects were mild, with abdominal pain, headaches, and drowsiness the most

commonly reported.

The efficacy of imipramine versus placebo in combination with CBT was assessed in the treatment of school refusal in

adolescents (Bernstein et al. 2000). Sixty-three adolescents with school refusal were randomly assigned to either imipramine

(mean daily dose = 182 mg) plus CBT or placebo plus CBT for an 8-week trial. The group treated with imipramine plus CBT

showed a significantly higher rate of school attendance than did the group treated with placebo plus CBT (70% vs. 28%,

respectively). In a 1-year follow-up of 41 of the 63 subjects, no significant differences between the two groups were found in

prevalence of anxiety diagnoses (Bernstein et al. 2001).

Clomipramine

A 12-week double-blind, placebo-controlled trial of clomipramine (dosage range = 40–75 mg/day) in 46 children and

adolescents with school refusal failed to show a significant positive effect (Berney et al. 1981).

Benzodiazepines

Graae et al. (1994) conducted a double-blind crossover trial of 4 weeks of clonazepam therapy (dosage range = 0.5–2.0

mg/day) and 4 weeks of placebo in 15 children (ages 7–13 years) with anxiety disorders, predominantly separation anxiety

disorder. No significant improvement was found relative to baseline for clonazepam or placebo. Two boys discontinued the

study because of significant disinhibition and marked irritability, aggression, and tantrums, and 1 boy was noncompliant with

the protocol. The most common clonazepam side effects were drowsiness, irritability, and oppositional behavior.

In an open-label study, 9 children (ages 8–11 years) with school refusal received chlordiazepoxide (10–30 mg daily) for

5–30 days (D’Amato 1962). Eight of the children (89%) regularly attended school after 2 weeks of treatment. Drowsiness

was the only reported side effect.

Gabapentin

Two adolescents with school refusal who received gabapentin (dosage range = 1,200–2,000 mg/day) were reported to have

a positive response to treatment (Durkin 2002).

Posttraumatic Stress Disorder

The prevalence of PTSD in adolescents is reported to be 6.3% (Giaconia et al. 1995). The criteria for diagnosing PTSD in

youths are the same as those used for adults (American Psychiatric Association 2000). PTSD symptoms in children tend to

vary over time, and although the disorder is chronic, the course is prolonged with greater severity of the stressor (Clarke et

  1. 1993).

Citalopram

Eight adolescents with PTSD received citalopram in a fixed daily dose of 20 mg in a 12-week open-label study (Seedat et al.

2001). Core PTSD symptoms of reexperiencing, avoidance, and hyperarousal showed statistically significant improvement at

week 12, with a 38% reduction in total score on the Clinician-Administered PTSD Scale—Child and Adolescent Version

(CAPS-CA; Nader et al. 1996). Citalopram was well tolerated, and the most common side effects were increased sweating,

nausea, headache, and tiredness.

In a larger 8-week open trial, Seedat et al. (2002) treated 24 children and adolescents with citalopram (dosage range =

20–40 mg/day; mean daily dose 20 mg). Both the children and adolescents had a significant reduction in CAPS-CA scores at

endpoint. Common side effects of citalopram were drowsiness, headache, nausea, and increased sweating.

Clonidine

Seven preschool children (ages 3–6 years) with a diagnosis of PTSD received open treatment with clonidine at a dosage

range of 0.05–0.15 mg/day (Harmon and Riggs 1996). To decrease sedation, oral clonidine was subsequently converted to a

clonidine patch. The majority of children showed at least moderate improvements in hyperarousal, hypervigilance, insomnia,

nightmares, and mood lability.Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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Guanfacine

A 7-year-old girl with PTSD received guanfacine 0.5 mg daily, which suppressed PTSD nightmares for the 7-week period of

administration (Horrigan 1996).

Carbamazepine

Twenty-eight children and adolescents (ages 8–17 years) with a diagnosis of PTSD received carbamazepine (dosage range =

300–1,200 mg/day) for an average of 35 days. Twenty-two patients (78%) became asymptomatic, and the remaining six

patients were significantly improved during the course of treatment (Looff et al. 1995).

Propranolol

Eleven children (ages 6–12 years) with a diagnosis of PTSD participated in an off–on–off medication design of 4 weeks of

propranolol treatment (Famularo et al. 1988). Propranolol was initiated at 0.8 mg/kg/day and titrated to a maximum of 2.5

mg/kg/day. A significant improvement in PTSD symptoms was found during the treatment period. Side effects included

sedation and mildly lowered blood pressure and pulse.

Panic Disorder

The prevalence of panic disorder in children and adolescents ranges from 0.6% to 5.0% in the community and from 0.2% to

9.6% in clinical settings (Masi et al. 2001). The diagnostic criteria for panic disorder in children and adolescents are the same

as those for adults (American Psychiatric Association 2000). Panic disorder in youths is a chronic condition, and there is

continuity between pediatric and adult panic disorder (Biederman et al. 1997).

Selective Serotonin Reuptake Inhibitors

In an open-label trial, 12 children and adolescents (ages 7–17 years) with panic disorder were treated with an SSRI for 6–8

weeks (Renaud et al. 1999). Mean daily doses of SSRIs were fluoxetine 34 mg, paroxetine 20 mg, and sertraline 125 mg.

Adjunctive benzodiazepines were used for 8 patients. Seventy-five percent of patients showed much to very much clinical

improvement while receiving treatment with SSRIs. At the end of the trial, 8 patients (67%) no longer fulfilled panic disorder

criteria. No significant side effects were found.

Paroxetine

A chart review was conducted of 18 child and adolescent outpatients (ages 7–16 years) with a diagnosis of panic disorder

who received monotherapy with paroxetine (dosage range = 10–40 mg/day; mean daily dose = 23 mg) (Masi et al. 2001).

The mean paroxetine treatment duration was 11.7 months. Fifteen patients (83%) had a CGI score of much or very much

improved. The most common side effects were nausea, tension–agitation, sedation, insomnia, palpitations, and headache.

Citalopram

Three youths (ages 9, 13, and 16 years) with panic disorder and school phobia were treated with citalopram (up to 20

mg/day) over an 8- to 15-month period. All patients experienced resolution of panic attacks during the course of citalopram

treatment (Lepola et al. 1996).

Tricyclic Antidepressants

An 11-year-old girl with panic disorder and agoraphobia was treated with imipramine (75 mg/day), which resulted in

cessation of panic attacks (Ballenger et al. 1989). A 9 year-old boy with panic disorder and Tourette’s syndrome was treated

with imipramine (25 mg daily). Within 1 week of treatment onset, the boy’s panic episodes ceased, and the cessation was

maintained over a 2-year period (Sverd 1988).

Two cases of children (ages 8 and 13 years) with panic disorder and agoraphobia were reported in which the combination of

imipramine and alprazolam resulted in complete remission of symptoms (see Ballenger et al. 1989).

Benzodiazepines

In a 2-week open trial, four adolescents with panic disorder were treated with clonazepam (0.5 mg twice daily). A significant

reduction in panic attacks (from 3 attacks per week to 0.25 per week) was reported (Kutcher and MacKenzie 1988).

Mixed Anxiety Disorders

Selective Serotonin Reuptake Inhibitors

Fluvoxamine

One hundred twenty-eight outpatient children and adolescents (ages 6–17 years) with GAD, social anxiety disorder, or

separation anxiety disorder (who had received 3 weeks of open treatment with supportive psychoeducational therapy

without improvement) were randomly assigned to fluvoxamine (up to 300 mg) or placebo for an 8-week trial (Research Units

on Pediatric Psychopharmacology Anxiety Study Group 2001). The group treated with fluvoxamine had a significantly greater

reduction in scores on the Pediatric Anxiety Rating Scale (Research Units on Pediatric Psychopharmacology Anxiety Study

Group 2002a) than did the group treated with placebo. On the CGI-I scale, the response rate was 76% in the group treated

with fluvoxamine and 29% in the group receiving placebo. Adverse effects of abdominal discomfort and increased motor

activity were more common in the group treated with fluvoxamine than in the group treated with placebo. Following

completion of the 8-week placebo-controlled study, the 128 patients entered a 6-month open-label treatment phase

(Research Units on Pediatric Psychopharmacology Anxiety Study Group 2002b). Anxiety symptoms remained low in 33 of 35

(94%) subjects who initially responded to fluvoxamine. Of 14 fluvoxamine nonresponders switched to fluoxetine, anxietyPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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symptoms significantly improved in 10 (71%) patients. Among 48 placebo nonresponders, 27 (56%) showed significant

improvement in anxiety on fluvoxamine.

Fluoxetine

Seventy-four youths (ages 7–17 years) with GAD, separation anxiety disorder, and/or social phobia were randomly assigned

to fluoxetine (20 mg/day) or to placebo for 12 weeks (Birmaher et al. 2003). Sixty-one percent of fluoxetine-treated patients

and 35% of placebo-treated patients were much or very much improved. Fluoxetine was well tolerated, with mild headache

and gastrointestinal symptoms reported as adverse events.

Fluoxetine’s efficacy in long-term treatment of children with GAD, separation anxiety disorder, and/or social phobia was

assessed in a 1-year open treatment (Clark et al. 2005) following the acute-phase study (Birmaher et al. 2003). Compared

with youths taking no medication, those taking fluoxetine (n = 42) showed significantly superior outcome in anxiety

measures. These investigators concluded that fluoxetine is effective in maintenance treatment of anxiety disorders in youth.

Clinical Recommendations for Anxiety Disorders

SSRIs are the medication treatment of choice for OCD in children and adolescents (Riddle 1998). Clomipramine is also

effective in the treatment of this disorder; however, anticholinergic side effects often make this a less tolerable agent than

SSRIs. A 10- to 12-week trial at adequate dosages is required to determine whether a child with OCD will respond to an SSRI

(Greist et al. 1995). If a child fails to respond to one SSRI, switching to another SSRI is a reasonable strategy. Clomipramine

may be a third treatment option, either as monotherapy or as augmentation of an SSRI. Other possible SSRI augmentation

strategies are clonazepam, antipsychotics, lithium, and buspirone; however, these agents have not received systematic study

in children (American Academy of Child and Adolescent Psychiatry 1998). Some children may require long-term medication

maintenance; however, it is reasonable to attempt medication discontinuation 1 year after symptom resolution. Medication

should be tapered gradually to assess for relapse and to avoid discontinuation symptoms (Grados et al. 1999).

In regard to other childhood anxiety disorders, SSRIs are first-line treatment (Reinblatt and Walkup 2005). Venlafaxine has

also demonstrated efficacy for the treatment of childhood GAD. Other treatment options include buspirone, TCAs, and

benzodiazepines (Bernstein et al. 1996). However, benzodiazepines should be used only on a short-term basis (i.e., weeks)

because of the potential for abuse and dependence in youths (Riddle et al. 1999).

ATTENTION-DEFICIT/HYPERACTIVITY DISORDER

The prevalence of ADHD in children and adolescents is estimated to range from 5% to 12% (Barbaresi et al. 2002; Centers

for Disease Control and Prevention 2005; Rowland et al. 2002), although only about half of children diagnosed with ADHD

receive treatment (Centers for Disease Control and Prevention 2005). In addition to the core behavioral features of

inattention, hyperactivity, and impulsivity, children with ADHD often have significant impairment in social and academic

functioning (Barkley 2005). About 4% of adults in the general population meet criteria for ADHD (Kessler et al. 2006). Of all

of the childhood psychiatric disorders, ADHD has the greatest number of pharmacological treatment studies.

Psychostimulants

The classes of psychostimulants include methylphenidate, dexmethylphenidate, dextroamphetamine, mixed amphetamine

salts, and L-lysine-D-amphetamine (lisdexamfetamine). By the 1980s, there were already hundreds of randomized, controlled

trials showing the efficacy of stimulants for the treatment of ADHD in school-age children (Greenhill et al. 1999). Beginning

in the late 1980s and 1990s, the intensive study of the pharmacokinetics and pharmacodynamics of stimulant medications

was undertaken, pioneered by the group at the University of California at Irvine. Analog classroom settings were used to

examine the hour-by-hour effects of stimulant medications on behavior and cognition and its relationship to serum stimulant

medications. Such studies led to the development of methylphenidate (Swanson et al. 1998, 1999, 2000, 2002, 2003), mixed

salts of amphetamine–dextroamphetamine (Greenhill et al. 2003; McCracken et al. 2003), extended-release methylphenidate

(Swanson et al. 2004; Wigal et al. 2003), dexmethylphenidate hydrochloride (Quinn et al. 2004), and lisdexamfetamine

dimesylate (Findling et al. 2006a).

Subsequently, numerous large-scale clinical trials proved the efficacy of these new agents (Biederman et al. 2002; Greenhill

et al. 2002, 2005; McCracken et al. 2003; Pelham et al. 1999; Wigal et al. 2005a; Wolraich 2000; Wolraich et al. 2001). A

methylphenidate transdermal patch (Findling and Lopez 2005; Pelham et al. 2005) has been recently approved for use in the

treatment of ADHD. In the study of the transdermal patch, 270 children with ADHD were randomly assigned to receive either

a placebo patch or varying dosages of the methylphenidate patch in a double-blind design. At the end of the 5-week study,

72% of those on the active patch were classified as responders compared to 24% on placebo; side effects were similar to oral

methylphenidate (decreased appetite, insomnia, weight loss, tics).

Lisdexamfetamine dimesylate is a “prodrug” in which D-amphetamine is covalently bound to L-lysine (Findling et al. 2006a).

In the bloodstream, the lysine is hydrolyzed to yield the active stimulant. The prodrug appears to have lower potential than

amphetamine for oral or intravenous abuse (Jasinski and Krishman 2006a, 2006b). In the pivotal trials, 290 children (ages

6–12 years) with ADHD were randomly assigned to either placebo ( n = 72) or different dosages of lisdexamfetamine

dimesylate (30, 50, 70 mg/day). All doses of lisdexamfetamine dimesylate were superior to placebo ( P <0.0001) throughout

the 4-week trial at three different time points during the day (10 A.M., 2 P.M., and 6 P.M.). Common side effects of

lisdexamfetamine dimesylate were decreased appetite (39%), irritability (10%), insomnia (19%), nausea/vomiting

(6%–9%), and weight loss (9%). No serious adverse events were reported. The medication was well tolerated in long-term

follow-up, with no significant laboratory or ECG abnormalities reported (Childress et al. 2006).

Initial research with long-acting stimulants was carried out in school-age children, but recent controlled trials of stimulants

have focused on adolescents (T. J. Spencer et al. 2006b; Wilens et al. 2006b) and adults (Biederman et al. 2006a; Weisler etPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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  1. 2006). These studies in older individuals show response rates to stimulants similar to those of children; with adequate

response for most subjects being obtained with 70–100 mg of methylphenidate or 40–60 mg of amphetamine a day.

Preschoolers with ADHD have also been the focus of recent work. In the NIMH Preschool ADHD Treatment Study (PATS), 183

children (ages 3–5 years) underwent an open-label trial of methylphenidate; subsequently 165 of these subjects were

randomized into a double-blind, placebo-controlled crossover trial of methylphenidate lasting 6 weeks (Greenhill et al.

2006b). One hundred forty subjects who completed this second phase went on to enter a long-term maintenance study of

methylphenidate. Parents of subjects in this study were required to complete a 10-week course of parent training before

their child was treated with medication. Of note, only 37 of 279 enrolled parents felt that the behavior training resulted in

significant or satisfactory improvement (Greenhill et al. 2004).

Results from the short-term, open-label run-in and double-blind crossover studies do show that methylphenidate is effective

in preschoolers with ADHD (Wigal et al. 2006). The mean optimal dose of methylphenidate was found to be 0.7 + 0.4

mg/kg/day, which is lower than the mean of 1.0 mg/kg/day found to be optimal in the Multimodal Treatment of ADHD (MTA)

study with school-age children. Eleven percent of subjects discontinued methylphenidate because of adverse events (Wigal et

  1. 2006). Also relative to the MTA study, the preschool group showed a higher rate of emotional adverse events, including

crabbiness, irritability, and proneness to crying. The conclusion was that the dose of methylphenidate (or any stimulant)

should be titrated more conservatively in preschoolers than in school-age patients, and lower mean doses may be effective. A

pharmacokinetic study done as part of the PATS protocol showed that preschoolers metabolized methylphenidate more slowly

than did school-age children, perhaps explaining these results (McGough et al. 2006).

Longer-term open-label studies of these agents, often lasting up to 2 years (McGough et al. 2005; Wilens et al. 2003b, 2005),

have also been performed, giving the field more data about efficacy and safety after prolonged use. These studies do not

show the presence of any major medical adverse events, with no abnormalities of hematological or chemical measures

(Biederman et al. 2002; Greenhill et al. 2002; McCracken et al. 2003; Wolraich 2000; Wolraich et al. 2001).

Atomoxetine

Atomoxetine is a noradrenergic reuptake inhibitor that has indirect effects on dopamine reuptake in cortex but not in the

striatum (Bymaster et al. 2002). Numerous double-blind, placebo-controlled trials have demonstrated its efficacy in the

treatment of ADHD in children, adolescents, and adults (Michelson et al. 2001, 2002, 2003). Given its pharmacokinetic

half-life of 5 hours, it is generally dosed twice a day. While open trials comparing methylphenidate to atomoxetine showed

the two agents to have similar efficacy (Kratochvil et al. 2002), double-blind, placebo-controlled trials comparing

atomoxetine to amphetamine (Biederman et al. 2006b; Wigal et al. 2005b) and methylphenidate (Michelson 2004) have

shown the stimulants to be more efficacious.

Atomoxetine is effective in treating ADHD in those with comorbid tics and may also reduce tics (Allen et al. 2005). It is also

useful in children with ADHD who have comorbid anxiety, showing effectiveness in treating anxiety and inattention (Sumner

et al. 2005). Atomoxetine is well tolerated in long-term use. In a global multicenter study, 416 children and adolescents who

responded to an initial 12-week open-label period of treatment with atomoxetine were randomly assigned to continued

atomoxetine treatment or placebo for 9 months under double-blind conditions. Atomoxetine was significantly superior to

placebo in preventing relapse (defined as a return to 90% of baseline symptom severity), 22.3% and 37.9%, respectively

(Michelson 2004). Data from 13 atomoxetine studies (6 double-blind, 7 open-label) were pooled for subjects ages 12–18

years with ADHD (Wilens et al. 2006b). Of the 601 atomoxetine-treated subjects in this meta-analysis, 537 (89.4%)

completed 3 months of acute treatment. At the time of publication, a total of 259 subjects (48.4%) were continuing

atomoxetine treatment; 219 of these subjects had completed at least 2 years of treatment. Symptoms remained improved up

to 24 months without dosage escalation. During the 2-year treatment period, 99 (16.5%) subjects discontinued treatment

due to lack of effectiveness, and 31 (5.2%) subjects discontinued treatment due to adverse events. No clinically significant

abnormalities in height, weight, blood pressure, pulse, mean laboratory values, or ECG parameters were found.

Tricyclic Antidepressants

Before the advent of atomoxetine, TCAs were the primary alternative to stimulant treatment of ADHD. There have been 15

double-blind, placebo-controlled studies of TCAs demonstrating the efficacy of desipramine, imipramine, amitriptyline,

nortriptyline, and clomipramine in the treatment of children with ADHD (Daly and Wilens 1998; Popper 2000; Prince et al.

2000). Desipramine is rarely used today because of isolated reports in the 1990s of sudden death at therapeutic dosages

(Popper and Ziminitzky 1995). In general, there has been a decline in the use of TCAs for the treatment of ADHD due to the

need to monitor ECG (see Appendix) and the risk of death in the event of overdose.

Bupropion

Bupropion is an antidepressant with noradrenergic and dopaminergic actions. Simeon et al. (1986) conducted a 14-week

single-blind study consisting of placebo baseline for 4 weeks, bupropion (dosage range = 50–150 mg; mean daily dose = 135

  1. mg) for 8 weeks, and placebo posttreatment for 2 weeks. Seventeen boys with ADHD and conduct disorder (ages 7–13 years)

participated in the study. Significant improvement in hyperactivity, conduct problems, and global functioning was found.

A double-blind, placebo-controlled four-center study was conducted to assess the efficacy of bupropion in the treatment of

childhood ADHD (Conners et al. 1996). One hundred nine children (ages 6–12 years) with ADHD were randomly assigned to

bupropion (n = 72) or placebo (n = 37) for a 6-week trial. Dosages of bupropion ranged from 3 to 6 mg/kg/day. Significant

treatment effects were found for hyperactivity, impulsivity, conduct problems, and attention. Moderate effect sizes of

bupropion that were somewhat less than those for stimulant treatment of ADHD were found. The most frequent adverse

effects with bupropion were rash, urticaria, nausea, and vomiting. Although no patients experienced a seizure, 6 of 72

children who received bupropion had electroencephalograms (EEGs) that changed from normal at baseline to abnormal onPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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the final day of treatment (approximately 4 weeks later) (Conners et al. 1996).

Bupropion was compared with methylphenidate in a small double-blind crossover study (Barrickman et al. 1995). Fifteen

children and adolescents (ages 7–17 years) were randomly assigned to bupropion or methylphenidate for 6 weeks,

underwent washout for 2 weeks, and were crossed over to the other medication. The dosage range of bupropion was 1.4–5.7

mg/kg/day (mean daily dose = 3.3 mg/kg) and the dosage range of methylphenidate was 0.4–1.3 mg/kg/day (mean daily

dose = 0.7 mg/kg). Bupropion and methylphenidate produced significant and similar improvement in ADHD symptoms.

Despite this finding, however, the two medications have never been compared in more rigorous parallel-group designs, and

clinical experience strongly suggests that the effect size for bupropion is not as great as that for stimulants.

Clonidine

A review of the literature from 1980 to 1999 found 39 studies regarding the use of clonidine for symptoms of childhood

ADHD, and 11 of the studies (n = 150) had sufficient data to be included in a meta-analysis (Connor et al. 1999). Of these

150 subjects, 42 received clonidine for ADHD, and the others received clonidine for ADHD comorbid with tic disorders ( n =

67), developmental disorders (n = 15), or conduct disorders (n = 26). The mean daily dose of clonidine was 0.18 mg, and the

average length of treatment was 10.9 weeks. Clonidine showed a moderate effect size of 0.58 on symptoms of ADHD, which

is smaller than the effect size (0.82) reported for stimulant treatment of ADHD (Swanson et al. 1995).

Guanfacine

Two open trials and one controlled trial provide some support for the use of guanfacine in the treatment of youths with

ADHD. In a study by Hunt et al. (1995), 13 children and adolescents with ADHD received guanfacine (mean daily dose = 3.2

  1. mg) for 1 month. Significant improvements in hyperactivity and inattention were found. In another study by Chappell et al.

(1995b), 10 children and adolescents with comorbid ADHD and Tourette’s syndrome received guanfacine (mean daily dose =

1.5 mg) over a 4- to 20-week period. Four of the 10 children (40%) had moderate to marked improvement in ADHD

symptoms.

In an 8-week double-blind, placebo-controlled trial, 34 children and adolescents (ages 7–14 years) with ADHD and tic

disorder were randomly assigned to guanfacine (dosage range = 1.5–3.0 mg/day) or placebo (Scahill et al. 2001). There was

a 37% improvement in ADHD symptoms for children treated with guanfacine, compared with an 8% improvement in ADHD

symptoms for children receiving placebo. The most common side effects of guanfacine were sedation and dry mouth. There

were no significant changes in pulse or blood pressure with guanfacine.

An extended-release formulation of guanfacine has been recently studied in a double-blind, placebo-controlled Phase III

multicenter trial (Melmed et al. 2006). Children and adolescents ages 6–17 years were randomly assigned to placebo or 2, 3,

or 4 mg/day of guanfacine. All three doses of guanfacine were superior to placebo in reducing symptoms of ADHD. The most

commonly reported side effects were headache, somnolence, and fatigue. No serious adverse events were reported. In

healthy young adults (ages 19–24 years), abrupt discontinuation of 4 mg of extended-release guanfacine did not lead to

increases in blood pressure or ECG abnormalities (Kisicki et al. 2006).

Modafinil

Modafinil, a nonstimulant activator of the cortex approved for the treatment of narcolepsy, was studied to determine its

efficacy in the treatment of ADHD. A 9-week double-blind, placebo-controlled trial randomly assigned 248 subjects to either

placebo or modafinil (dosage range = 170–425 mg once per day) (Biederman et al. 2005d). At study termination, 48% of

subjects on modafinil were rated as much or very much improved compared to 17% of those on placebo (effect size vs.

placebo = 0.69). The most common adverse events reported were insomnia (29%), headache (20%), and decreased appetite

(16%). In a second controlled trial, 200 subjects were randomly assigned to placebo or modafinil (Greenhill et al. 2006a);

52% of those on modafinil were classified as responders versus 18% of subjects on placebo ( P <0.001). A double-blind,

placebo-controlled discontinuation study involving 189 patients with ADHD also demonstrated efficacy of modafinil in ADHD

(Swanson et al. 2006b). While the medication was well tolerated by most subjects in open-label follow-up studies, one case

of suspected Stevens-Johnson syndrome was reported, and the FDA declined to approve the medication for clinical use (U.S.

Food and Drug Administration 2006c). Given the low response rate (~50%) relative to that seen with stimulants

(65%–85%), it is not likely that modafinil would have emerged as a first-line treatment for ADHD. Clinicians face a dilemma

if they choose to use modafinil (Provigil) off label for the treatment of ADHD; this should be attempted only if all other agents

have failed and the patient and family are informed of the reason for the FDA’s failure to approve the medication.

Other Antidepressants

Fenfluramine, a potent serotonergic agonist, was found to be ineffective in the treatment of ADHD (Donnelly et al. 1989).

Thus, findings from open trials suggesting improvement in ADHD symptoms with SSRI treatment (Barrickman et al. 1991;

Gammon and Brown 1993) must be greeted with skepticism. In the Gammon and Brown (1993) study, improvement in mood

and attention was seen when fluoxetine was added to methylphenidate when the clinical response after monotherapy with

the stimulant was deemed insufficient in a sample of 32 children and adolescents with ADHD. However, in a later open-label

study of sertraline or fluoxetine in the treatment of seven children and adolescents with ADHD and major depression, Findling

(1996) found no improvement in ADHD symptoms for any patient treated with SSRIs. More recently, the addition of

fluvoxamine to methylphenidate was not demonstrated to be effective relative to addition of placebo in a sample of children

with ADHD and comorbid anxiety (Abikoff et al. 2005).

In an open trial of venlafaxine, 7 of 16 children and adolescents (44%) showed some improvement in ADHD symptoms of

hyperactivity and impulsivity; however, no improvement was seen in cognitive symptoms (Olvera et al. 1996). The mean

daily dose of venlafaxine was 60 mg. Four patients (25%) were unable to tolerate the medication, with 3 of the patients

discontinuing medication because of worsening hyperactivity. Other side effects included drowsiness, irritability, and nausea.Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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No effects on blood pressure or heart rate were found. No double-blind, placebo-controlled trials have ever proven the

efficacy of venlafaxine in the treatment of ADHD. Given concerns about antidepressants increasing the risk of suicidal

ideation, anti-depressants without proven efficacy in the treatment of ADHD should not be used in its treatment. They may be

used in conjunction with an established medication treatment for ADHD to treat a comorbid anxiety or depressive disorder.

Clinical Recommendations for Attention-Deficit/Hyperactivity Disorder

Recently, the Texas Children’s Medication Algorithm Project (CMAP) has revised the algorithm for the treatment of ADHD

(Pliszka et al. 2006a). Based on current research and panel discussion, the stages of medication treatment were established

as follows:

Stage 1: Psychostimulant

Stage 2: Alternative psychostimulant

Stage 3: Atomoxetine

Stage 3a: Combination of stimulant and low-dose atomoxetine

Stage 4: Bupropion or TCA

Stage 5: Alternative antidepressant from stage 5

Stage 6: Alpha agonist (guanfacine or clonidine)

Arnold (2000) reviewed studies in which subjects underwent a trial of both amphetamine and methylphenidate. This review

suggested that approximately 41% of subjects with ADHD responded equally to both methylphenidate and amphetamine,

while 44% responded preferentially to one of the classes of stimulants. This suggests the initial response rate to stimulants

may be as high as 85% if both stimulants are tried (in contrast to the finding of 65%–75% response when only one stimulant

is tried). There is at present, however, no method to predict which stimulant will produce the best response in a given

patient. The recent practice parameters of the American Academy of Child and Adolescent Psychiatry (2007) characterize all

FDA-approved agents (stimulants and atomoxetine) as appropriate for initial treatment of ADHD, with antidepressants and

alpha agonists as second line.

DISRUPTIVE BEHAVIOR DISORDERS AND AGGRESSION

Oppositional Defiant Disorder and Conduct Disorder

Oppositional defiant disorder (ODD) is a pattern of negativistic, defiant, angry behavior that is persistent and causes

impairment in the child’s social functioning. Conduct disorder (CD) consists of antisocial and aggressive behavior (lying,

stealing, fighting, fire setting, destruction of property, truancy, running away) (American Psychiatric Association 2000). ODD

and CD are highly comorbid with ADHD, particularly in younger children (Maughan et al. 2004; Pliszka et al. 1999).

Psychostimulants

The efficacy of methylphenidate in treating 84 youths (ages 6–15 years) with CD, with and without ADHD, was assessed in a

5-week double-blind, placebo-controlled trial. Ratings of antisocial behaviors specific to CD were significantly reduced by

methylphenidate treatment (up to 60 mg/day) (Klein et al. 1997). The severity of the ADHD did not affect the response of CD

symptoms to the stimulant studies. Since this study, multiple double-blind, placebo-controlled trials have shown that ODD

responds to stimulant medication, yielding an effect size similar to that for the ADHD symptoms (American Psychiatric

Association 2000; Pelham et al. 2001; T. J. Spencer et al. 2006a).

Atomoxetine

Children and adolescents (ages 8–18 years) with ADHD were treated for approximately 8 weeks with placebo or atomoxetine

under randomized, double-blind conditions. Of the 293 subjects, 39% were diagnosed with comorbid ODD and 61% were not

(Newcorn et al. 2005). Treatment group differences and differences between patients with and without comorbid ODD were

examined post hoc for changes on numerous clinical measures. Youths with ADHD and comorbid ODD showed statistically

significant improvement in ADHD and ODD symptoms as well as in quality-of-life measures on atomoxetine relative to

placebo. Treatment response was similar in youths with and without ODD, although the comorbid group may require higher

doses to achieve response than those with ADHD alone.

In general, a child with ODD or CD should be treated with a stimulant or atomoxetine before proceeding to the use of other

psychotropic agents. The use of more potent agents (mood stabilizers, antipsychotics) is generally reserved for those with

severe aggression, and then only after a behavioral treatment has failed (Pappadopulos et al. 2003; Pliszka et al. 2006a).

Aggressive Behavior

While ODD and CD are syndromes, aggression is a symptom. Although many children and adolescents with CD are aggressive,

a child can meet criteria for CD without being aggressive; aggression may present as a problematic symptom in children with

depression, psychosis or bipolar disorder without the child meeting criteria for CD. Thus, the clinician must be clear whether

ODD/CD or aggression is the target of treatment, as studies have addressed the problems separately. Treatments for ADHD

have been used to target ODD/CD, whereas mood stabilizers and antipsychotics have been used in patients with severe

aggressive outbursts, regardless of diagnosis (Pappadopulos et al. 2006).

Psychostimulants

In a meta-analysis of the literature from 1970 to 2001 that utilized 28 studies to determine the effect size for stimulants on

overt and covert aggression-related behaviors in children with ADHD, it was found that the mean effect size for aggressive

behaviors was similar to that for core behaviors of ADHD (Connor et al. 2002; Pappadopulos et al. 2006).

RisperidonePrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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A significant body of research has accumulated showing the effectiveness of risperidone in the treatment of aggression,

although most of these studies involve patients with subaverage intelligence (Pappadopulos et al. 2006). One hundred ten

children (ages 5–12 years) with an IQ of 36–84 with a disruptive behavior disorder were enrolled in a clinical trial of

risperidone consisting of a 1-week single-blind, placebo run-in period followed by a 6-week double-blind, placebo-controlled

period (Snyder et al. 2002). Eighty percent of subjects had comorbid ADHD. Risperidone dosages ranged from 0.02 to 0.06

mg/kg/day. The risperidone-treated subjects showed a significant (P <0.001) reduction (47.3%) in mean scores versus

placebo-treated subjects (20.9%) on the Conduct Problem subscale of the Nisonger Child Behavior Rating Form (NCBRF) ( P

<0.001). The effect of risperidone was unaffected by diagnosis, presence/absence of ADHD, psychostimulant use, and IQ

status. Risperidone produced no changes on the cognitive variables, and the most common side effects were somnolence,

headache, appetite increase, and dyspepsia. Somnolence did not predict response of aggressive symptoms. Side effects

related to extrapyramidal symptoms were reported in 7 (13.2%) and 3 (5.3%) of the subjects in the risperidone and placebo

groups, respectively (P = 0.245).

Other double-blind, placebo-controlled trials of risperidone in children and adolescents with disruptive behavior disorders

(and subaverage IQ) have yielded similar results, with no negative trials reported (Aman et al. 2002; Buitelaar et al. 2001;

LeBlanc et al. 2005). Weight gain was a significant side effect in these studies, but there has not been evidence of adverse

neuropsychological effects (Gunther et al. 2006). Addition of stimulant does not appear to increase rates of side effects and

enhances treatment of hyperactivity (Aman et al. 2004). Indeed adding risperidone to a stimulant to control aggression has

become a common practice, although a recent controlled study showed that aggression was equally reduced when either

placebo or risperidone was added to psychostimulant medication (Armenteros et al. 2007). The sample in this study was

small (N = 25), but the study should caution clinicians that aggression can respond to psychosocial events, like the

expectations of a study.

Because of weight gain and increased prolactin associated with risperidone, concern exists regarding its long-term use

(Correll and Carlson 2006). The long-term safety and efficacy of risperidone in disruptive behavior disorders in children with

subaverage IQ were studied in a 48-week open-label extension study of risperidone in 77 children (Turgay et al. 2002).

Subjects received risperidone at daily doses of between 0.02 and 0.06 mg/kg. Adverse events were reported for 76

participants; none were serious, and most were mild/moderate in severity. Somnolence (52%), headache (38%), and weight

gain (36%) were the most common adverse events. The degree of sedation was mild and not associated with cognitive

deterioration. Mean weight gain was 8.5 kg, half of this attributable to normal growth. Asymptomatic peak prolactin levels

were observed within 4 weeks of beginning risperidone treatment and declined over time to within normal range. At study

endpoint, mean prolactin levels were statistically significantly greater than baseline only in male participants but within the

normal range. Twenty participants experienced mild or moderate extrapyramidal symptoms, but these did not cause

withdrawal from the study.

The pooled database of five studies of the long-term use of risperidone ( n = 700) included 700 children ages 5–15 years who

had received risperidone for 11 or 12 months (Dunbar et al. 2004). Subjects also had baseline and 11- or 12-month height

measurements (n = 350); girls 9 years and boys 10 years also had baseline and 11- or 12-month Tanner staging ( n = 222).

Risperidone-treated children had a mean increase in height 1.2 cm greater than the reference population, and they

experienced no delay in progression through Tanner staging. Transient increases in prolactin did not correlate with growth or

sexual maturation. The authors concluded that there was no evidence of statistically or clinically significant growth failure or

delay in pubertal onset or progression in children treated for up to 1 year with risperidone.

A full review of all studies of risperidone in the treatment of childhood aggression was recently published (Pandina et al.

2006). This review pooled adverse-event data from these studies ( n = 688), showing the most common side effects of

risperidone to be somnolence (33%), weight gain (20%), hyperprolactinemia (10.2%), and fatigue (10%). In the pooled

studies, there was an excess mean weight gain (over normal growth) of 6.0 + 7 kg after 35–43 weeks of treatment. Of the

688 patients, 651 were free of dyskinetic movements at baseline, and only 1 patient developed new dyskinetic movements

during the follow-up period (these symptoms resolved even though risperidone was continued). There was no worsening of

dyskinetic movements in those with such preexisting symptoms. Rates of extrapyramidal side effects were low throughout

the long-term follow-up period. It should be noted that the dosages of risperidone used in these studies were quite low (1–2

mg/day); thus, these results may not apply to dosages in the 6 mg/day range.

Quetiapine

Quetiapine has been studied in an open trial with aggressive children with CD (Findling et al. 2006b) The 8-week trial

enrolled 17 children ages 6–12 years. Outcome measures included the Rating of Aggression Against People and/or Property

Scale (RAAPPS), the NCBRF, and the Conners Parent Rating Scale (CPRS-48). Blood sampling for pharmacokinetic analyses

occurred at the end of weeks 2 and 8: the mean dose of quetiapine at week 8 was 4.4 ± 1.1 mg/kg. Significant decreases in

baseline scores of the RAAPPS, and in several subscales of the NCBRF and the CPRS, were found by the end of the study ( P

<0.05). No patients discontinued because of an adverse event or experienced extrapyramidal side effects. These preliminary

data suggest that aggressive children with CD may benefit from quetiapine. The pharmacokinetics of quetiapine supports

twice-daily dosing in children. Nine of the subjects in this study were subsequently enrolled in a 26-week open-label trial;

they were treated with dosages of quetiapine ranging from 75 to 300 mg/day. Aggression remained well controlled, no

subject developed extrapyramidal side effects, and 1 subject had a significant weight gain but remained in the study.

The efficacy and tolerability of quetiapine and divalproex for the treatment of impulsivity and reactive aggression were

studied in 33 subjects with bipolar disorder and disruptive behavior disorders (Barzman et al. 2006). The subjects were

randomly assigned to quetiapine (400–600 mg/day) or divalproex (serum level 80–120 microgram/mL) for 28 days in this

double-blinded study. Repeated-measures analysis of variance (ANOVA) demonstrated statistically significant

within-treatment-group effects for divalproex (baseline = 20.6, endpoint = 13.3, P <0.0001) and quetiapine (baseline = 18.8,Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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endpoint = 10.8, P <0.0001) for the Positive and Negative Syndrome Scale (PANSS) Excited Component (EC), but there was

no significant difference in the rate of improvement in the PANSS EC scores between the two treatment groups; thus, the two

agents showed similar efficacy for the treatment of impulsivity and reactive aggression in this study. No double-blind,

placebo-controlled trials of quetiapine in the treatment of aggression have been performed.

Other Atypical Antipsychotics

There have only been small open trials and case reports of the use of aripiprazole, olanzapine, and ziprasidone in the

treatment of aggression (Hazaray et al. 2004; Khan et al. 2006; Rugino and Janvier 2005; Staller and Staller 2004; Stephens

et al. 2004; Valicenti-McDermott and Demb 2006). In most of these studies, children had primary psychiatry diagnoses other

than ODD or CD, such as mood disorders or developmental disorders.

Rugino and Janvier (2005) reported on the use of aripiprazole in a mixed sample ( n = 17) of children with bipolar disorder

and developmental disorders. Only 4 of the subjects responded, but coadministration of alpha 2 agonists in a large proportion

of the sample may have confounded the results. A retrospective chart review of 32 children (ages 5–19 years) with

developmental disabilities treated with aripiprazole was conducted (Valicenti-McDermott and Demb 2006). Twenty-four had

diagnoses within the autistic spectrum, and 18 had mental retardation. Other disorders included ADHD/disruptive behavior

disorders (n = 13), mood disorders (n = 7), reactive attachment disorder (n = 2), and sleep disorders ( n = 2). Target

symptoms included aggression, hyperactivity, impulsivity, and self-injurious behaviors. The mean daily aripiprazole starting

dose was 7.1 ± 0.32 mg (0.17 mg/kg/day), and the mean daily maintenance dose was 10.55 ± 6.9 mg (0.27 mg/kg/day).

While improvement in target symptoms was found in 56% of the sample, side effects were reported in 16 (50%), with the

most frequent being sleepiness (n = 6). Mean body mass index (BMI) rose significantly, and weight gain was more

pronounced in children younger than 12 years.

Inpatient children who received intramuscular ziprasidone or olanzapine for emergency treatment of aggression were found

to have similar lengths of stay and number of restraints, but those administered ziprasidone required many more injections

and were more likely to require coadministration of lorazepam (Khan et al. 2006).

The effects of olanzapine on aggressive behavior and tic severity was examined in 10 subjects (ages 7–13 years) with a

primary diagnosis of Tourette’s syndrome and a history of aggressive behavior (Stephens et al. 2004). They were treated in a

2-week single-blind placebo run-in followed by an 8-week treatment-phase trial. The starting dose of olanzapine was

1.25–2.5 mg/day and was titrated at biweekly intervals, as tolerated. The mean dosage at the end of the trial was 14.5

mg/day. Olanzapine produced clinically and statistically significant reductions of aggression and tic severity from baseline to

trial completion, as measured by the Achenbach Child Behavior Checklist (CBCL) and Yale Global Tic Severity Scale (YGTSS).

Weight gain during the treatment period was the most common adverse effect (range = 2–20 lbs; group mean = 12.0 lbs ±

5.71). No other significant adverse effects were observed during the 10-week trial.

Lithium

The efficacy of lithium in the treatment of CD in youths has been demonstrated in three of the four double-blind,

placebo-controlled studies reported to date. Haloperidol, lithium, and placebo were compared in a double-blind, randomized

trial for 61 hospitalized children with aggression (ages 5–12 years) and CD. The optimal dosages of haloperidol ranged from

1 to 6 mg/day; the optimal dosages of lithium ranged from 500 to 2,000 mg/day. Both haloperidol and lithium were found to

be significantly superior to placebo in reducing aggression. However, there were more adverse effects associated with

haloperidol than with lithium, including excessive sedation, acute dystonic reaction, and drooling. Stomachache, headache,

and tremor were more common with lithium than with haloperidol (Campbell et al. 1984).

In a subsequent study, Campbell et al. (1995) conducted a 6-week double-blind, placebo-controlled trial of lithium treatment

for 50 hospitalized children (ages 5–12 years) with aggression and CD. The mean optimal daily dose of lithium was 1,248 mg,

and the mean serum level was 1.12 mEq/L. Lithium was significantly superior to placebo in reducing aggression. The most

common lithium side effects were stomachache, nausea, vomiting, headache, tremor, and urinary frequency.

Eighty-six inpatients (ages 10–17 years) with CD were randomly assigned to lithium (mean daily dose = 1,425 mg; mean

serum level = 1.07 mmol/L) or placebo in a 4-week double-blind trial. Aggression ratings decreased significantly for the

group treated with lithium, compared with the group treated with placebo. More than 50% of patients in the lithium group

experienced nausea, vomiting, and urinary frequency (Malone et al. 2000).

Rifkin et al. (1997) found no significant differences between lithium and placebo in aggression ratings in a 2-week

double-blind study of 33 inpatients with CD. The short duration of treatment may have accounted for the lack of efficacy,

suggesting that a 4- to 6-week trial is necessary to show response. In a clinical series of 17 hospitalized children,

approximately 75% showed reduction of aggression when treated with lithium (Vetro et al. 1985).

Divalproex

Twenty outpatient children and adolescents (ages 10–18 years) with CD or ODD were randomly assigned to divalproex

(dosage range = 750–1,500 mg/day; mean blood level = 82 g/mL) or placebo in a 6-week double-blind, placebo-controlled

crossover study. Of the 15 patients who completed both phases, 12 patients (80%) had a statistically significant superior

response to divalproex. Increased appetite was the only significant side effect (Donovan et al. 2000).

Steiner et al. (2003) randomly assigned 71 adolescents with CD in a residential facility for juvenile offenders to either

therapeutic or low doses of divalproex for 7 weeks; both subjects and outcome raters were blind to treatment status.

Reduction in aggression severity (P = 0.02), improvement in impulse control (P <0.05), and global improvement (P =

0.0008) were greater in the group with therapeutic divalproex levels than in the low-dose condition. Serum level and

“Immature defenses” (as assessed by the Weinberger Adjustment Inventory) predicted response to divalproex, butPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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psychiatric comorbidity did not (Saxena et al. 2005).

Saxena et al. (2006) conducted a 12-week open trial of divalproex in 24 children of bipolar parents who had mixed (but

nonbipolar) diagnoses (major depression, cyclothymia, ADHD, and ODD). At the end of the study, 71% of the subjects were

determined to be divalproex responders based on reductions in aggression as assessed by the Overt Aggression Scale.

Clonidine

Seventeen outpatients (ages 5–15 years) with CD or ODD received open treatment with clonidine for 1–18 months.

Aggression decreased significantly in 15 children (88%). The major side effect of clonidine was drowsiness (Kemph et al.

1993).

Despite controversy over its safety (Swanson et al. 1995; see Appendix), clonidine has often been combined with stimulants

to treat comorbid aggression in children with ADHD. In a 2-month randomized comparison of clonidine, methylphenidate, and

clonidine combined with methylphenidate in the treatment of 24 children and adolescents (ages 6–16 years) with ADHD and

CD or ODD, it was found that all three treatment groups showed significant improvement in oppositional and CD symptoms

(Connor et al. 2000). No significant ECG changes were noted.

Children ages 6–14 years with ADHD currently taking methylphenidate were randomly assigned to receive clonidine syrup

0.10–0.20 mg/day (n = 37) or placebo (n = 29) for 6 weeks (Hazell and Stuart 2003). Analysis showed that significantly

more clonidine-treated children than controls were responders on the Conduct subscale (21 of 37 vs. 6 of 29; P <0.01) of the

parent-report Conners Behavior Checklist but not the Hyperactive Index subscale (13 of 37 vs. 5 of 29). Compared with

placebo, clonidine was associated with a greater reduction in systolic blood pressure measured standing and with transient

sedation and dizziness. Clonidine-treated individuals had a greater reduction in a number of unwanted effects associated

with psychostimulant treatment compared with placebo. The findings supported the use of clonidine in combination with

psychostimulant medication to reduce conduct symptoms associated with ADHD.

Beta-Blockers

Propranolol

In an open study of 16 patients (ages 4–24 years) with aggressive outbursts treated with propranolol (mean daily dose =

164 mg), 19 patients (63%) showed a significant reduction in aggressive outbursts. Fatigue was the most common side

effect (Kuperman and Stewart 1987). In a retrospective study of propranolol (dosage range = 50–1,600 mg/day; median

optimal daily dose = 160 mg) for uncontrolled rage outbursts in 30 patients (ages 7–35 years [4 adults]) with organic brain

dysfunction, approximately 75% of patients showed moderate to marked improvement in rage outbursts. The most common

side effects were somnolence, lethargy, and hypotension (Williams et al. 1982). There was a lack of standardized outcome

measures, however, and the wide dosage range is puzzling. Results of this study have never been confirmed by a controlled

trial in children or adolescents.

Nadolol

Nadolol is a beta-blocker that does not cross the blood–brain barrier; thus, any clinical effect would be due to its action on

the peripheral sympathetic nervous system. Its use as an adjunctive pharmacological treatment for aggression and/or

inattention/overactivity was studied in a developmentally delayed child, adolescent, and young adult population (Connor et

  1. 1997). Twelve subjects (mean age = 13.8 years, range = 9–24 years) completed a 5-month trial of nadolol (mean dosage

= 109 mg/day, range = 30–220 mg/day) with baseline, weekly, and end-of-study assessments of aggression and

inattention/overactivity. Ten subjects (83%) showed clinical improvement while receiving nadolol. Significant improvements

were noted on observer-rated overt categorical aggression, severity of illness, and global impressions of improvement. No

significant effects were found for inattention/overactivity, although blood pressure and pulse were significantly reduced.

Nadolol was well tolerated, with few side effects. While the study suggests usefulness of this agent in treating aggression,

the sample size was small and no controlled trials have been performed. The effectiveness of beta-blockers in the treatment

of aggression must be viewed as unproven; beta-blockers can induce asthma attacks and significant bradycardia so should be

used only as a last resort.

Clinical Recommendations for Disruptive Behavior Disorders and Aggression

The Center for the Advancement of Children’s Mental Health at Columbia University joined with the New York State Office of

Mental Health to develop guidelines for treatment of aggression, which led to the Treatment Recommendations for the Use of

Antipsychotics for Aggressive Youth (TRAAY) (Pappadopulos et al. 2003; Schur et al. 2003). These recommendations call first

for a thorough psychiatric evaluation of the child with severe aggression. Next, a psychosocial intervention should be used

first when the aggression is the primary problem (such as in ODD/CD or intermittent explosive disorder). The clinician should

then treat any primary condition, such as ADHD, psychosis, or mood disorder, that may be causing or contributing to the

aggression. If the aggression does not respond to these steps, then an atypical antipsychotic should be used. Different

atypical antipsychotics should be tried as monotherapy before moving to polypharmacy (e.g., adding a classic mood stabilizer

such as lithium or divalproex to the antipsychotic). Monitoring of weight and laboratory measures of glucose, cholesterol, and

triglycerides is mandatory (Correll and Carlson 2006).

Alpha agonists may be used in more mild aggression or temper outbursts since their effect size on aggression is more modest

(Hazell and Stuart 2003). Beta-blockers should be used only as a last resort. Recently, the Intercontinental Schizophrenia

Outpatient Health Outcomes study compared the response of aggressiveness to clozapine, olanzapine, quetiapine,

risperidone, or haloperidol in a very large sample of adult schizophrenia patients ( n = 3,135) who had 6 months of

monotherapy (Bitter et al. 2005). Olanzapine and risperidone were significantly superior to haloperidol and clozapine for

reducing aggression. Given that typical antipsychotics have higher rates of tardive dyskinesia than atypical antipsychoticsPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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(Correll et al. 2004) and now have been shown to be less effective for the treatment of aggression, the use of typical

antipsychotics to treat children with aggression is contraindicated.

TOURETTE’S SYNDROME

The prevalence of Tourette’s syndrome is estimated to be 0.7% in children (Comings et al. 1990). Tourette’s syndrome is

characterized by multiple motor tics and by one or more vocal tics that occur frequently for longer than 1 year (American

Psychiatric Association 2000). The average age at onset of tics is at about age 5 years. Tics tend to increase in severity in the

prepubertal years, but they diminish significantly by age 18 years (Leckman 2002).

-Adrenergic Receptor Agonists

Clonidine

Two of three controlled studies support the efficacy of clonidine treatment for Tourette’s syndrome. In a 12-week

double-blind, placebo-controlled trial, 39 children and adolescents with Tourette’s syndrome were randomly assigned to

clonidine (dosage range = 3.2–5.7 g/kg/day; mean daily dose = 4.4 g/kg) or placebo. The group treated with clonidine had

a statistically significant greater improvement on Tourette’s Syndrome Global Scale (TSGS) scores than did the group

receiving placebo. Clonidine was most effective for motor tics and tics that were noticeable to others. The most common side

effects were sedation, fatigue, dry mouth, dizziness, and irritability (Leckman et al. 1991).

Thirteen children and adolescents (ages 9–16 years) with Tourette’s syndrome were randomly assigned to a 20-week

single-blind, placebo-controlled trial of clonidine (mean daily dose = 5.5 g/kg). Six patients (46%) had a positive response

to clonidine, as determined by TSGS scores. The most common side effects of clonidine were sedation, headache, and

early-morning awakening (Leckman et al. 1985).

Twenty-four children and adolescents with Tourette’s syndrome completed a double-blind crossover study that included two

12-week treatment phases—one phase with clonidine (either 0.0075 mg/kg/day or 0.015 mg/kg/day) and the other phase

with placebo. However, in this study, clonidine did not significantly reduce motor tics, vocalizations, or behaviors. The most

common side effects were sedation, dry mouth, and restlessness. There were no clinically significant changes in blood

pressure or pulse (Goetz et al. 1987).

A retrospective study of 53 children and adolescents (ages 5–18 years) with Tourette’s syndrome was conducted to

determine predictors of response to clonidine treatment. Patients who had a longer duration of vocal tics had a good

behavioral response to clonidine. Of 47 patients who received clonidine for tic control, 57% had a good tic response. The

authors concluded that clonidine is a useful medication for 40%–60% of patients with mild to moderate tics (Lichter and

Jackson 1996).

Clonidine was compared with risperidone in the treatment of children and adolescents with Tourette’s syndrome (Gaffney et

  1. 2002). Following a single-blind placebo lead-in, 21 subjects (ages 7–17 years) were randomly assigned to 8 weeks of

double-blind treatment with clonidine or risperidone. Research scales evaluated tics and comorbid obsessive-compulsive and

attention-deficit/hyperactivity symptoms. Risperidone (mean dosage = 1.5 ± 0.9 mg/day) and clonidine (mean dosage =

0.175 ± 0.075 mg/day) appeared equally effective in the treatment of tics in an intent-to-treat analysis, as rated by the

YGTSS. Risperidone produced a mean reduction in the YGTSS of 21%; clonidine produced a 26% reduction. There was a

nonsignificant trend for subjects with comorbid obsessive-compulsive symptoms to respond better to risperidone (63%) than

to clonidine (33%). Both treatments caused mild sedation that resolved with time; no clinically significant extrapyramidal

symptoms were observed.

Guanfacine

Scahill et al. (2001) randomly assigned 34 children (mean age 10.4 years) with comorbid ADHD and tic disorders to receive

either placebo or guanfacine for 8 weeks in a double-blind fashion. Tic severity declined by an average of 31% in the

guanfacine group versus 0% in the placebo group. Globally, 9 of 17 subjects were rated as much or very much improved on

the CGI compared with none so rated in the placebo group. One subject withdrew due to sedation; guanfacine was associated

with insignificant decreases in blood pressure. In contrast, in a 4-week double-blind, placebo-controlled study of guanfacine

in 24 children (ages 6–16 years) with Tourette’s syndrome, there was no significant improvement in tic severity for

guanfacine-treated patients compared with placebo-treated patients (Cummings et al. 2002).

Lofexidine

Lofexidine is an 2 agonist used for the treatment of opiate withdrawal in the United Kingdom, similar to the use of clonidine

in the United States. Forty-four medication-free subjects (41 boys and 3 girls; mean age = 10.4 years) with ADHD, combined

type, and a tic disorder participated in an 8-week trial of lofexidine (Niederhofer et al. 2003). Lofexidine was associated with

a mean improvement of 41% in the total score on the teacher-rated ADHD Rating Scale, compared with 7% improvement for

placebo. Eleven of 22 subjects who received lofexidine were blindly rated on the CGI-I as either much improved or very much

improved, compared with none of 22 subjects who received placebo. Tic severity decreased by 27% in the lofexidine group,

compared with 0% in the placebo group. One lofexidine subject withdrew because of sedation at week 4. Lofexidine was

associated with insignificant decreases in blood pressure and pulse. Lofexidine appears to be a safe and effective treatment

for children with tic disorders and ADHD, although it is not clear if it has any advantage over clonidine or guanfacine.

Atypical Antipsychotics

Risperidone

Risperidone is the atypical antipsychotic most studied for the treatment of Tourette’s syndrome and tic disorders. RisperidonePrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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was compared with pimozide in a 12-week double-blind, placebo-controlled multicenter study of 50 patients (ages 10–65

years) with Tourette’s syndrome. Patients treated with both risperidone (mean daily dose = 3.8 mg) and pimozide (mean

daily dose = 2.9 mg) showed significant improvement on the Tourette’s Syndrome Severity Scale (TSSS; Shapiro et al. 1988).

Fourteen of 26 patients (54%) treated with risperidone and 9 of 24 patients (38%) treated with pimozide had very mild or no

symptoms on the TSSS at endpoint. Fewer patients treated with risperidone than with pimozide reported extrapyramidal side

effects. Side effects common to both treatment groups were depression, fatigue, and somnolence (Bruggeman et al. 2001).

In a double-blind, placebo-controlled trial in 48 adolescent and adult outpatients (ages 14–49 years) with Tourette’s

syndrome, patients were randomly assigned to risperidone (dosage range = 1–6 mg/day; median daily dose = 2.5 mg) or

placebo for an 8-week trial. Risperidone was significantly superior to placebo on the global severity rating of the TSSS.

Adverse effects more common in the group treated with risperidone than in the group treated with placebo were hypokinesia,

tremor, fatigue, and somnolence (Dion et al. 2002).

The efficacy of risperidone was further assessed in an 8-week randomized, double-blind, placebo-controlled trial using the

Total Tic score of the YGTSS as the primary outcome variable (Scahill et al. 2003). Thirty-four medication-free subjects (26

children and 8 adults) ranging in age from 6 to 62 years (mean = 19.7 ± 17.0 years) participated. After 8 weeks of treatment,

the 16 subjects receiving risperidone (mean daily dose = 2.5 ± 0.85) showed a 32% reduction in tic severity from baseline,

compared with a 7% reduction for the 18 subjects receiving placebo (P = 0.004). The 12 children randomly assigned to

risperidone showed a 36% reduction in tic symptoms, compared with an 11% decrease in the 14 children on placebo ( P =

0.004). Two children on risperidone showed acute social phobia, which resolved with dose reduction in 1 subject but resulted

in medication discontinuation in the other. A mean increase in body weight of 2.8 kg was observed in the risperidone group

compared with no change in placebo (P = 0.0001). No extrapyramidal symptoms and no clinically significant alterations in

cardiac conduction times or laboratory measures were observed.

Risperidone was compared to pimozide in the treatment of children and adolescents with tic disorders in a randomized,

double-blind crossover study (Gilbert et al. 2004). Nineteen children (ages 7–17 years) with Tourette’s syndrome or chronic

motor tic disorder were randomly assigned to 4 weeks of treatment with pimozide or risperidone, followed by the alternate

treatment after a 2-week placebo washout. The primary efficacy outcome measure was change in tic severity assessed by the

YGTSS. Compared to pimozide treatment, risperidone treatment was associated with significantly lower tic severity scores

(YGTSS: baseline 43.3 ± 17.5, pimozide 34.2 ± 14.2, risperidone 25.2 ± 13.6; P = 0.05). Weight gain during the 4-week

treatment periods was greater for risperidone (mean 1.9 kg) than pimozide (1.0 kg). No patient suffered a serious adverse

event, but 6 of 19 subjects failed to complete the protocol. Neither medication was associated with ECG changes. While

risperidone appeared superior to pimozide for tic suppression, it was associated with greater weight gain.

Most recently, a 6-week open-label study examined the effects of risperidone in the treatment of chronic tic disorder or

Tourette’s disorder in children and adolescents (Kim et al. 2005). The subjects were 15 young children and adolescents

(mean age 10 ± 2.4 years). Seven subjects were diagnosed with Tourette’s disorder and 8 subjects with chronic tic disorder.

Ten of the 15 subjects were administered risperidone for the first time, and 5 of the 15 subjects had been previously treated

with traditional drugs (haloperidol or pimozide). Clinical responses were measured at baseline and after 1, 3, and 6 weeks of

drug treatment by using the Korean version of the YGTSS and the Global Assessment of Functioning Scale. The mean dosage

of risperidone was 0.53 ± 0.13 mg for the first week, 0.90 ± 0.28 mg for the third week, and 1.23 ± 0.37 mg for the sixth

week. Comparison between periods according to the Korean version of the YGTSS showed significant differences ( P <0.01)

between the first week and the third week. After 6 weeks of administration, tic severity scale scores revealed a 36%

reduction in overall tic symptoms; 13 of the 15 subjects showed significant improvement, 1 subject showed no difference in

symptoms, and 1 subject showed worsening of symptoms.

Olanzapine

An open-label trial was performed to explore efficacy and safety of olanzapine for treatment of Tourette’s disorder (Budman

et al. 2001). Ten adult patients (ages 20–44 years) with Tourette’s disorder were treated using an open-label, flexible-dosing

schedule for 8 weeks. Three patients who continued olanzapine were reevaluated after 6 months. Three subjects were

psychotropic medication naive, 5 patients experienced intolerable side effects with conventional antipsychotics, and 2

patients had a past history of successful response to conventional antipsychotics. Tic severity was rated by the YGTSS;

weight, vital signs, and adverse effects were assessed weekly. Two of 10 patients prematurely discontinued olanzapine

owing to excessive sedation. Of 8 patients who completed the 8-week trial, 4 (50%) demonstrated reduction of global tic

severity scores by 20 points, and 6 (75%) demonstrated reductions by 10 points. Sedation, weight gain, increased appetite,

dry mouth, and transient asymptomatic hypoglycemia were the most common side effects. Tic improvements were

maintained in 3 patients reassessed 6 months later. Final olanzapine dosages ranged from 2.5 mg to 20 mg daily (mean =

10.9 mg/day).

The effects of olanzapine on aggressive behavior and tic severity were further examined in children with Tourette’s

syndrome, as described above in the aggression section of this chapter (Stephens et al. 2004). Olanzapine significantly

reduced tics in the 10-week trial.

Ziprasidone

In an 8-week double-blind, placebo-controlled trial, 28 children and adolescents (ages 7–17 years) with Tourette’s syndrome

were randomly assigned to ziprasidone (dosage range = 10–40 mg/day; mean daily dose = 28 mg) or placebo. The group

treated with ziprasidone had a statistically significant reduction in scores on the YGTSS, compared with the group treated

with placebo. The most common adverse event was somnolence. No clinically significant changes in vital signs or ECG

parameters were reported (Sallee et al. 2000).

Nonetheless, concerns continue to be raised about possible cardiovascular effects of ziprasidone. A sudden death occurred inPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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a child who participated in a clinical trial of ziprasidone for Tourette’s (Scahill et al. 2005). Despite the fact that a single dose

of ziprasidone did not produce abnormal ECG changes (Sallee et al. 2006), ECG changes were found in the children treated

with ziprasidone for Tourette’s syndrome in a long-term open-label safety study (Blair et al. 2005). In 20 children treated

with ziprasidone, there were statistically significant changes from baseline to peak values in heart rate, pulse rate, and QTc

intervals, but not in QRS complex width. The mean QTc prolongation was 28 ± 26 milliseconds and not related to dose (r =

0.16, P = .07). The peak QTc of three subjects reached or exceeded 450 milliseconds; one subject experienced a

114-millisecond prolongation. These findings, occurring at doses low by current treatment standards, suggest that

electrocardiographic monitoring is warranted when prescribing ziprasidone to children.

Quetiapine

The short-term safety and effectiveness of quetiapine in the treatment of children and adolescents with Tourette’s disorder

were studied in an 8-week open-label trial that included 12 subjects with a mean age of 11.4 ± 2.4 years (Mukaddes and

Abali 2003). Clinical responses, as measured by the Turkish version of the YGTSS, revealed a statistically significant

reduction in tic scores ranging from 30% to 100%. The mean dosage of quetiapine at the end of the study was 72.9 ± 22.5

mg/day. Three subjects complained of sedation in the first week of treatment.

In a retrospective study of clinic patients, 12 patients (ages 8–18 years) with Tourette’s syndrome received quetiapine

therapy at a starting dose of 25 mg/day, which was increased to a mean dosage of 175.0 ± 116.6 mg/day by the eighth week

of the study (Copur et al. 2007). The YGTSS score, which was 21.6 ± 4.0 at baseline, showed significant decreases at 4 and 8

weeks (reducing to 7.5 ± 7.4 and 5.6 ± 8.1, respectively; P <0.003). Routine laboratory parameters and serum prolactin

levels were all normal and did not change throughout treatment. Mild but significant increases in both body weight and BMI

at 4 and 8 weeks compared with baseline were observed. No controlled trials of quetiapine in the treatment of tic disorders

have been performed.

Aripiprazole

Murphy et al. (2005) reported six cases of children and adolescents (age range = 8–19 years, mean age = 12.1 years) who

had comorbid tic disorder and OCD and were treated with aripiprazole (mean dosage = 11.7 mg/day; range = 5–20 mg/day)

for 12 weeks. The subjects experienced a mean reduction of 56% in the severity of their tics as assessed by YGTSS. Similarly,

Yoo et al. (2006) treated 15 children and adolescents with tic disorder with aripiprazole (mean dosage = 10.89 mg/day;

range = 12.5–15 mg/day) and reported a mean reduction of 40% in YGTSS scores; side effects were minimal. Two subjects

experienced nausea, 1 had weight gain, and 1 suffered sedation that responded to dosage reduction.

A case series of 11 consecutive patients with Tourette’s syndrome (age range = 7–50 years; mean age = 7 years) were

treated with aripiprazole; the majority of these had been refractory to other treatments with other antipsychotics (Davies et

  1. 2006). Ten of the 11 patients who were treated with aripiprazole improved, although to variable degrees. In the majority

of patients, response was sustained with aripiprazole doses ranging from 10 to 20 mg daily. Side effects were mild and

transient.

Typical Antipsychotics: Pimozide and Haloperidol

In a controlled trial comparing pimozide, haloperidol, and placebo in 57 patients (ages 8–65 years) with Tourette’s

syndrome, both active treatments were significantly more effective than placebo, and haloperidol was slightly more effective

than pimozide. No significant differences in side effects were found between haloperidol and pimozide (Shapiro et al. 1989).

Sallee et al. (1997) conducted a 24-week double-blind, placebo-controlled crossover study of haloperidol (mean daily dose =

3.5 mg) and pimozide (mean daily dose = 3.4 mg) in 22 children and adolescents (ages 7–16 years) with Tourette’s

syndrome. Only pimozide was significantly superior to placebo on TSGS scores. There was a threefold higher frequency of

serious side effects (depression, anxiety, and severe dyskinesias) with haloperidol (41%) than with pimozide (14%) in these

youths. Extrapyramidal side effects were reported significantly more often with haloperidol than with pimozide.

In an open clinical trial in 31 patients (ages 10–50 years) with Tourette’s syndrome treated for, on average, 1–2 years, 23

patients (74.2%) receiving pimozide, compared with 14 patients (45.2%) receiving haloperidol, had significant clinical

improvement (Shapiro et al. 1983).

Long-term (6–84 months) treatment with pimozide (0.5–9 mg/day) was reported to produce a good clinical response in 81%

of 65 patients (ages 6–54 years) (Regeur et al. 1986). A 1- to 15-year follow-up of 33 patients (ages 9–50 years) with

Tourette’s syndrome treated with pimozide (2–18 mg/day), haloperidol (2–15 mg/day), or no medications found that

significantly more patients discontinued haloperidol than pimozide because of adverse side effects, especially dyskinesias

and dystonias (Sandor et al. 1990). Thus, pimozide appears superior to haloperidol for treatment of tics.

Other Agents

Metoclopramide

Metoclopramide is a dopamine antagonist used for the treatment of gastroesophageal reflux; it blocks dopamine 2 receptors in

the striatum but not in the cerebral cortex. Acosta and Castellanos (2004) reported that metoclopramide improved tics in 10

patients with tic disorders, with negligible adverse events. Nicolson et al. (2005) randomly assigned 27 children and

adolescents with tic disorders to receive either placebo or metoclopramide in an 8-week double-blind, placebo-controlled

trial. Metoclopramide was started at 5 mg/day and titrated to a maximum dose of 40 mg/day. In the active-drug group, there

was a 39% reduction in tics versus a 13% reduction on placebo ( P = 0.001). No extrapyramidal side effects were reported,

and side effects were not different between metoclopramide and placebo. Further large-scale double-blind,

placebo-controlled trials of this agent are needed.Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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Nicotine

In a double-blind, placebo-controlled trial, 74 patients (mean age = 11 years) with Tourette’s syndrome who received

haloperidol were randomly assigned to adjunctive transdermal nicotine (7 mg/24 hours) or placebo. Transdermal nicotine

was significantly superior to placebo in reducing symptoms of Tourette’s syndrome (Silver et al. 2001b). A transdermal

nicotine patch (7 mg/24 hours) as adjunctive treatment to antipsychotics was shown to produce significant improvement in

tic severity for 16 children and adolescents with Tourette’s syndrome (Silver et al. 1996).

In a trial of nicotine gum (2 mg) added to haloperidol treatment, 10 youths with Tourette’s syndrome had marked reduction

in tics (Sanberg et al. 1989). In a follow-up study with 10 additional patients, nicotine gum added to haloperidol was shown

to reduce tic frequency during and after 1 hour of gum chewing (McConville et al. 1991). In a controlled study comparing

nicotine gum plus haloperidol, nicotine gum only, and placebo gum in 19 patients with Tourette’s syndrome, the combined

treatment of nicotine gum plus haloperidol showed the greatest reduction in tic frequency and severity (McConville et al.

1992).

Mecamylamine

Mecamylamine is a nicotine receptor antagonist that has been used as an antihypertensive agent and for smoking cessation.

In an 8-week double-blind, placebo-controlled multicenter trial, 61 children and adolescents (ages 8–17 years) with

Tourette’s syndrome were randomly assigned to mecamylamine (dosage range = 2.5–7.5 mg/day) or placebo (Silver et al.

2001a). No significant difference was found on ratings of Tourette’s symptoms between the group treated with

mecamylamine and the group treated with placebo. The most common side effects were weakness, vomiting, muscle

twitching, hypersomnia, and dysphoria.

In one retrospective open-label study of 19 children and adolescents and 5 adults with Tourette’s syndrome treated with

mecamylamine (2.5–6.25 mg/day) for 8–550 days, a significant improvement in severity of illness from baseline was

reported (Macaluso et al. 2000). In another retrospective study that included 9 children with Tourette’s syndrome,

concomitant use of mecamylamine was found to improve symptoms of Tourette’s syndrome (Sanberg et al. 1998). Given that

this agent is rarely used in adults for its indicated purposes, further controlled studies are needed before it is used widely for

tic disorders.

Common Comorbid Conditions

Obsessive-Compulsive Disorder

Tourette’s syndrome is frequently comorbid with OCD (Leckman 2002), necessitating treatment of both conditions. The

Pediatric OCD Treatment Study (POTS) (March et al. 2007) randomly assigned 112 children with OCD (17 of whom had

comorbid tics) to CBT, sertraline, a combination of sertraline and CBT, or placebo. In patients without tics, combination

therapy was superior to CBT alone which in turn was superior to sertraline; all treatments were superior to placebo. In the

small subset of patients with tics, sertraline was not superior to placebo for the treatment of OCD, but combined treatment

was. An earlier study randomly assigned children with OCD and tics to either sulpiride (a typical antipsychotic) or

fluvoxamine for a double-blind treatment period, followed by a single-blind period of combined treatment (George et al.

1993). Fluvoxamine, whether alone or with sulpiride, did not ameliorate tics but was effective for OCD. In contrast, sulpiride

did reduce tics when used as monotherapy.

Attention-Deficit/Hyperactivity Disorder

ADHD is a common comorbid disorder with Tourette’s syndrome. Treatment of both disorders is often necessary in children.

Although prior literature has cautioned against the use of psychostimulants to treat ADHD in Tourette’s syndrome because of

potential exacerbation of tics, recent studies do not support this view. Methylphenidate in low to moderate doses did not

produce a clinically significant increase in motor tics for youths with tic disorders or Tourette’s disorder and ADHD

(Castellanos et al. 1997; Gadow et al. 1995). In a 2-year longitudinal follow-up of 29 children with ADHD and tic disorders

(predominantly Tourette’s syndrome) treated with methylphenidate, there was no evidence that methylphenidate increased

motor or vocal tics (Gadow et al. 1999).

In a 16-week double-blind, placebo-controlled multicenter study, 136 youths with tic disorder and ADHD were randomly

assigned to clonidine (mean daily dose = 0.25 mg), methylphenidate (mean daily dose = 26 mg), combination

methylphenidate plus clonidine (mean daily dose = 0.28 mg), or placebo. Compared with placebo, active treatment groups

showed a significant reduction in tic severity, with combination treatment showing the greatest improvement in tics

(Tourette’s Syndrome Study Group 2002). This is in contrast to an earlier smaller ( N = 37) double-blind, placebo-controlled

trial which found that clonidine did not reduce tic severity in children with Tourette’s syndrome and ADHD (Singer et al.

1995).

Atomoxetine was studied in children and adolescents (ages 7–17 years) who met criteria for ADHD and Tourette’s syndrome

or chronic motor tic disorder (Allen et al. 2005). Patients were randomly assigned to double-blind treatment with placebo ( n

= 72) or atomoxetine (0.5–1.5 mg/kg/day, n = 76) for up to 18 weeks. Atomoxetine treatment was associated with greater

reduction of tic severity at endpoint relative to placebo, approaching significance on the YGTSS total score ( P = 0.063) and

Tic Symptom Self-Report total score (P = 0.095) and achieving significance on the Clinical Global Impressions (CGI)

tic/neurological severity scale score (P = 0.002). Atomoxetine was effective for ADHD symptoms and clearly did not

exacerbate tic symptoms.

In a double-blind, placebo-controlled trial with 37 children with Tourette’s syndrome and ADHD, desipramine, compared with

clonidine, was reported to be more effective for both disorders (Singer et al. 1995). Compared with placebo, desipramine was

found to be significantly more effective for the reduction of both tics and ADHD symptoms in 41 children and adolescents (T.Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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Spencer et al. 2002). The earlier noted reports of sudden death limit its use. Nortriptyline has also been reported in

retrospective studies to be effective in treating the symptoms of both ADHD and Tourette’s syndrome in children and

adolescents (T. Spencer et al. 1993).

Clinical Recommendations for Tourette’s Syndrome

If a tic is not severe or socially impairing, observation may be in order, as the natural history of tics is to wax and wane; in

general, tics improve over time (Leckman 2002). Often, psychosocial treatment such as habit reversal training is highly

effective at reducing tics (Piacentini and Chang 2006). If conservative treatment fails, use of an alpha agonist would be

desirable, owing to the risk of weight gain and dyslipidemia with atypical antipsychotics. Due to lower efficacy and higher

risk of tardive dyskinesia with typical antipsychotics, the atypical antipsychotics are preferred. Haloperidol and pimozide

should be used only as a last resort when several atypical agents have failed.

In children with comorbid ADHD, a stimulant can be used, but a nonstimulant is indicated if the stimulant exacerbates tics

(Pliszka et al. 2006a). Often stimulants must be combined with alpha agonists or antipsychotics to control both the ADHD and

the tics (Pliszka et al. 2006a; Tourette’s Syndrome Study Group 2002). In children with OCD and comorbid tics, CBT or CBT

combined with a serotonin reuptake inhibitor should be tried first before proceeding with treatment of the tics with alpha

agonists or antipsychotics (March et al. 2007).

SCHIZOPHRENIA

The prevalence of schizophrenia in children younger than 13 years is very rare; however, the prevalence rises in adolescence,

with peak onset from 15 to 30 years (McClellan and Werry 2001). The clinical features of the disorder are similar in youths

and adults, and the same DSM-IV-TR criteria are used to establish a diagnosis (American Psychiatric Association 2000). The

outcome of childhood-onset schizophrenia is reported to be poor (Eggers and Bunk 1997). Typical antipsychotics have been

studied in small randomized, controlled trials of youths with schizophrenia. Recently, the results of large controlled

multicenter trials of atypical antipsychotics in adolescents with schizophrenia have been reported.

Atypical Antipsychotics

Clozapine

There has been one 6-week double-blind, placebo-controlled comparison of clozapine and haloperidol for 21 children and

adolescents (ages 6–18 years) with schizophrenia (Kumra et al. 1996). Clozapine (mean dosage = 176 mg/day; range =

25–525 mg/day) was significantly superior to haloperidol (mean dosage = 16 mg/day; range = 7–27 mg/day) in reducing

positive and negative symptoms of schizophrenia. Clozapine improved interpersonal functioning and enabled patients to live

in a less restrictive setting. Side effects, however, were significant with clozapine. One patient had a seizure, and 3 patients

were given anticonvulsants after they became more irritable and aggressive and experienced epileptiform changes on EEG.

Mild to moderate neutropenia, weight gain, and sinus tachycardia were the other major side effects. One-third of the

clozapine group discontinued use of the medication. One patient was discontinued from the haloperidol treatment group

because of early signs of neuroleptic malignant syndrome.

Clozapine was found to be effective for the treatment of aggressive behavior in children and adolescents with

treatment-refractory schizophrenia (Kranzler et al. 2005). Twenty youths received clozapine (mean daily dose = 476 mg at

week 24) in an open-label study. A significant reduction in the frequency of receiving emergency oral medications and

emergency injectable medications, as well as a decreased use of seclusion, was found on clozapine compared with before

clozapine treatment.

Olanzapine

A positive double-blind, placebo-controlled multicenter study of olanzapine (mean dosage = 11.1 mg/day) for the treatment

of adolescents with schizophrenia was recently reported (Kryzhanovskaya et al. 2006). One hundred adolescents were

randomly assigned to olanzapine (n = 72) or placebo (n = 35) for a 6-week trial. Olanzapine-treated adolescents had

significant improvements on the Brief Psychiatric Rating Scale for Children (BPRS-C; Overall and Pfefferbaum 1984) and

CGI-S compared with the placebo group. There was no significant difference in response rate ( 30% decrease in BPRS-C and

CGI severity 3) between olanzapine (37.5%) and placebo (25.7%) groups. Significantly more olanzapine-treated

adolescents had treatment-emergent high AST/SGOT, ALT/SGPT, and prolactin and low bilirubin and hematocrit during

treatment. There was a significant increase in fasting triglycerides at endpoint in the olanzapine-treated adolescents.

In an 8-week open-label trial of olanzapine (mean dosage = 17.5 mg/day) in the treatment of eight children and adolescents

with schizophrenia, there was a 17% improvement on the BPRS, a 27% improvement on the Scale for the Assessment of

Negative Symptoms, and a 1% improvement on the Scale for the Assessment of Positive Symptoms (Kumra et al. 1998). The

magnitude of the effect size for olanzapine was reported to be greater than that for clozapine. The most common side effects

reported for olanzapine were increased appetite, constipation, nausea, vomiting, headache, somnolence, insomnia, sustained

tachycardia, transient elevation of liver transaminase levels, increased agitation, and difficulty concentrating. Average weight

gain during a 6-week period of olanzapine was 3.4 kg.

In an 8-week open-label prospective trial of olanzapine (mean total daily dose = 12.4 mg/day) in 16 adolescents (age range

= 12–17 years), statistically significant reductions in total PANSS scores and improvement in global functioning were found

(Findling et al. 2003b).

Risperidone

The first positive double-blind, placebo-controlled multicenter trial of risperidone in the treatment of adolescents with

schizophrenia was recently reported (Haas et al. 2007). One hundred sixty patients were randomly assigned to risperidonePrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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1–3 mg/day (n = 55), risperidone 4–6 mg/day (n = 51), or placebo (n = 54) for a 6-week trial. Both dosage ranges of

risperidone were significantly superior to placebo on the primary efficacy measure, PANSS total change score at endpoint.

The most common adverse events were somnolence (24%), agitation (15%), and headache (13%) in the risperidone 1–3

mg/day group. Extrapyramidal disorder (16%), dizziness (14%), and hypertonia (14%) were the most common adverse

events in the risperidone 4–6 mg/day group. The investigators concluded that the overall risk–benefit ratio favored the lower

dosage range of risperidone.

Aripiprazole

The results of a large double-blind, placebo-controlled multicenter trial of aripiprazole for the treatment of schizophrenia in

adolescents were recently reported (Findling et al. 2007). Three hundred and two patients were randomly assigned to

aripiprazole 10 mg, aripiprazole 30 mg (after 5- or 11-day titration), or placebo over a 6-week period. Both the 10-mg and

30-mg doses of aripiprazole showed statistically significant differences from placebo on the PANSS total score at week 6

(Robb et al. 2007). The most common adverse events associated with aripiprazole were extrapyramidal disorder,

somnolence, and headache.

Quetiapine

No data are available from double-blind, placebo-controlled trials of quetiapine for the treatment of schizophrenia in youth.

There have been two open trials assessing the effectiveness of quetiapine in adolescents with psychotic disorders. J. A. Shaw

et al. (2001) conducted an 8-week open trial of quetiapine (467 mg/day; range 300–800 mg/day) in 15 adolescents with a

diagnosis of psychotic disorder (including 5 with a diagnosis of schizophrenia). Quetiapine significantly reduced psychotic

symptoms in these adolescents. Mean weight gain over the 8-week period was 3.4 kg. There were no changes in prolactin

and cholesterol levels or in ECG or ophthalmic examination findings. The most common adverse effects were somnolence,

agitation, drowsiness, and headache. McConville et al. (2000) assessed the effectiveness of quetiapine in 10 adolescents with

psychotic disorders (7 with schizoaffective disorder, 3 with bipolar disorder). Improvement in both positive and negative

symptoms was observed during the course of the 25-day inpatient trial.

In a long-term study of an adolescent treated with quetiapine, it was reported that continued improvement in positive

symptoms was evident up to 8 months after initiation of treatment, and negative symptoms were still improving at 18

months. After 28 months of treatment, there were no apparent adverse effects (Hayden 2001).

Comparison of Atypical Antipsychotics

In an open-label 12-week trial, risperidone (mean dosage = 1.6 mg/day) was compared with olanzapine (mean dosage = 8.2

mg/day) in the treatment of 25 children with schizophrenia (Mozes et al. 2006). Both groups showed similar significant

improvement in the PANSS total and subscale scores. Eleven (91.7%) of the olanzapine-treated children and 9 (69.2%) of

the risperidone-treated children completed the 12-week study. Both groups showed significant weight increase from baseline

to endpoint (mean 5.8 kg for olanzapine group and mean 4.5 kg for risperidone group).

In an 8-week double-blind study, 50 youths (ages 8–19 years) with psychotic disorders were randomly assigned to

risperidone (mean dosage = 4 mg/day), olanzapine (mean dosage = 12.3 mg/day), or haloperidol (mean dosage = 5

mg/day) (Sikich et al. 2004). Eighty-eight percent of patients treated with olanzapine, 74% treated with risperidone, and

53% treated with haloperidol met response criteria (CGI-I scores of much or very much improved and at least a 20%

reduction in BPRS-C total score). Sedation, extrapyramidal symptoms, and weight gain were the most common side effects.

Clozapine was compared with olanzapine in an 8-week double-blind, randomized trial (P. Shaw et al. 2006). Twenty-five

youths (ages 7–16 years) with schizophrenia who were resistant to treatment with at least two antipsychotics participated in

the trial. Clozapine (mean dosage = 327 mg/day) showed significant improvement in all outcome measures, compared with

olanzapine (mean dosage = 19.1 mg/day), which showed improvement on some outcome measures. Improvement in

negative symptoms was significantly greater for the clozapine group. Clozapine produced more adverse events, including

nocturnal enuresis, tachycardia, and hypertension. Prolactin levels showed significantly greater increases in the olanzapine

group. At 2-year follow-up, 15 patients who were receiving clozapine had continued clinical improvement, although lipid

abnormalities (n = 6) and seizures (n = 1) had occurred.

Typical Antipsychotics

Haloperidol

Haloperidol has been compared with placebo and other typical antipsychotics in controlled trials in youths. In a 10-week

double-blind, placebo-controlled crossover study, the safety and efficacy of haloperidol were assessed in 12 hospitalized

children (ages 5–12 years) with schizophrenia. Haloperidol (optimal dosage range = 0.5–3.5 mg/day) was significantly

superior to placebo in improving overall clinical functioning and reducing ideas of reference, delusions, and hallucinations.

Common side effects were acute dystonic reaction, drowsiness, and dizziness (E. K. Spencer et al. 1992).

Haloperidol was compared with fluphenazine in a 12-week double-blind study of 30 outpatients (ages 6–12 years) with

schizophrenia. Both haloperidol and fluphenazine were very effective in improving symptoms. There was no significant

difference between their overall efficacy; 87% of haloperidol patients and 93% of fluphenazine patients were much or very

much improved. The most common side effects were extrapyramidal symptoms, which occurred more frequently with

fluphenazine than with haloperidol (Engelhardt et al. 1973). In an 8-week double-blind comparison trial of haloperidol and

fluphenazine in 60 children (ages 5–12 years) with schizophrenia, both medications were effective in improving symptoms;

however, haloperidol was more effective than fluphenazine in reducing provocativeness and autism (Faretra et al. 1970).

Haloperidol and loxapine were compared in a 4-week double-blind, placebo-controlled study of 75 adolescent inpatients withPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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schizophrenia. Both haloperidol and loxapine were significantly superior to placebo, and there was no significant difference in

efficacy between the two medications. Response rates (based on CGI improvement) were 87.5% for loxapine, 70% for

haloperidol, and 36.4% for placebo. Common side effects were sedation, extrapyramidal symptoms, and somnolence (Pool et

  1. 1976).

Thiothixene

Thiothixene was compared with thioridazine in a 6-week single-blind study of 21 adolescent inpatients with schizophrenia.

Thiothixene (optimal mean dosage = 16.2 mg/day) and thioridazine (optimal mean dosage = 178 mg/day) were equally

effective in controlling symptoms, although most of the adolescents continued to be quite impaired. Thiothixene was less

sedating than thioridazine (Realmuto et al. 1984). Thiothixene was also compared with trifluoperazine in an 8-week

double-blind study of 16 children (ages 8–15 years) with schizophrenia (Wolpert et al. 1967). The effects of both medications

were similar in terms of decreasing avoidance behavior, reducing stereotypic behavior, and increasing peer socialization. Side

effects were minimal in both groups.

In a single-blind study, thiothixene (10–24 mg/day) was administered to 18 children (ages 5–13 years) with schizophrenia.

All patients experienced global clinical improvement, with significant improvement noted in motor activity, stereotyped

behavior, coordination, sleeping, affect, exploratory behavior, concentration, eating habits, and range of communication.

Common side effects were extrapyramidal symptoms and increased salivation (Waizer et al. 1972).

Trifluoperazine

A study of four children with schizophrenia who received trifluoperazine (4 mg/day) reported that the medication had little

influence in improving classroom behavior for three of the four children (Simpson 1977).

Pimozide

Pimozide (dosage range = 1–2 mg/day) produced improvement in affective contact and social behavior in youths with

schizophrenia in a small open study followed by placebo discontinuation (Pangalila-Ratulangi 1973).

Clinical Recommendations for Schizophrenia

Both typical and atypical antipsychotics have demonstrated some effectiveness in the treatment of schizophrenia in youths,

although the sample sizes have been small in the trials of typical antipsychotics. Given fewer reported extrapyramidal side

effects and tardive dyskinesia with atypical antipsychotics, it would be reasonable to initiate treatment with an atypical

antipsychotic for a child with schizophrenia. Clozapine, however, should not be initiated unless at least two other

antipsychotics have been tried without success. It is important to monitor weight and metabolic parameters for children who

receive atypical antipsychotics.

Antipsychotics should be administered for a period of no less than 4–6 weeks at adequate dosages in order to determine

efficacy. If there is no response or intolerable side effects, then a trial of a different antipsychotic should be initiated

(American Academy of Child and Adolescent Psychiatry 2001).

There are no data to guide maintenance treatment. Because the majority of youths will have a second psychotic episode

within 5–7 years of stabilization, there is a significant risk of relapse with medication withdrawal (Kumra 2000). It is

recommended that first-episode patients receive maintenance pharmacological treatment for 1–2 years after the initial

episode, given the risk of relapse (American Academy of Child and Adolescent Psychiatry 2001). If medication

discontinuation is attempted, the dosage should be gradually reduced over several months.

AUTISTIC DISORDER AND OTHER PERVASIVE DEVELOPMENTAL DISORDERS

The prevalence of autistic disorder and other pervasive developmental disorders is estimated to be up to 18.7 per 10,000

population (Howlin 2000). Core features of these disorders are impairments in communication and social skills and the

restriction of interests and activities (American Psychiatric Association 2000). Associated behavioral features include

hyperactivity, stereotypies, attentional problems, self-injurious behavior, aggression, mood lability, anxiety, obsessions, and

compulsions. The majority of children with autistic disorder will continue to have significant social and communication

impairments throughout adulthood, although some individuals will be able to live independently (Buitelaar and

Willemsen-Swinkels 2000).

Pharmacotherapy is one component of a treatment plan for children with autism. Although there are controlled studies, open

trials, and case reports of a variety of pharmacological agents, no medication has been identified that effectively treats the

core symptoms of autism and other pervasive developmental disorders (Tanguay 2000). Pharmacotherapy is aimed at target

symptoms in order to increase the ability of these children to participate in educational and other psychosocial interventions

(Volkmar et al. 1999).

Atypical Antipsychotics

Risperidone

Risperidone has received FDA approval for the treatment of irritability associated with autistic disorder in children and

adolescents, including symptoms of aggression toward others, deliberate self-injuriousness, temper tantrums, and quickly

changing moods.

Risperidone was chosen as the first drug to be studied by the Research Units on Pediatric Psychopharmacology (RUPP)

network funded by NIMH, which was designed to investigate the safety and efficacy of medications for treating maladaptive

symptoms and behaviors associated with autistic disorders (McDougle et al. 2000b). One hundred one children ranging in age

from 5 to 17 years with autistic disorder participated in an 8-week double-blind, placebo-controlled trial of risperidonePrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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(dosage range = 0.5–3.5 mg/day; mean = 1.8 mg/day). A significantly greater positive response—defined as a 25% decrease

in the irritability subscale of the Aberrant Behavior Checklist and a rating of much or very much improved on the CGI-I

scale—was found for the risperidone group (69%) compared with the placebo group (12%). Adverse events of increased

appetite, fatigue, drowsiness, dizziness, and drooling were more common in the risperidone group than in the placebo group.

Mean weight gain was 2.7 kg in the risperidone group and 0.8 kg in the placebo group. An 18-month follow-up showed that

the majority of subjects who responded to risperidone during intermediate-length treatment continued to show improvement

(McDougle et al. 2004).

In an 8-week double-blind, placebo-controlled trial, 79 children (ages 5–12 years) with autism and other pervasive

developmental disorders were randomly assigned to either placebo or risperidone (mean dosage = 1.5 mg/day).

Risperidone-treated patients exhibited a 64% improvement over baseline irritability, compared with a 30.7% improvement in

placebo-treated subjects (Shea et al. 2004).

In a 6-month placebo-controlled study of 40 children (ages 2–9 years) with autism, risperidone (1 mg/day) decreased

aggressiveness, hyperactivity, and irritability and improved social responsiveness and nonverbal communication. Appetite

increase, weight gain, sedation, and transient dyskinesias in the risperidone-treated children were reported (Nagaraj et al.

2006).

The long-term effects of risperidone were assessed in youths (ages 5–17 years) with autism spectrum disorders (Troost et al.

2005). Twenty-four youths received risperidone for 6 months, followed by a double-blind discontinuation to placebo or

continued risperidone. Risperidone was superior to placebo in preventing relapse, with relapse rates of 25% and 75%,

respectively. Weight gain, increased appetite, fatigue, and anxiety were the most common side effects.

Similar rates of relapse were reported after placebo substitution following 4 months of risperidone treatment in 32 children

with autism. The relapse rates were 62.5% in the placebo substitution group and 12.5% in those who continued risperidone

treatment (Research Units on Pediatric Psychopharmacology Autism Network et al. 2005).

Olanzapine

In a 12-week open-label study of olanzapine (mean dosage = 7.8 mg/day) in eight patients (ages 5–42 years) with autistic

disorder or pervasive developmental disorder not otherwise specified, the six patients who completed the trial showed much

or very much global improvement (Potenza et al. 1999). Significant improvements were found in hyperactivity, social

relatedness, affectual responses, sensory responses, language usage, self-injurious behavior, aggression, irritability, anxiety,

and depression. The most significant adverse effects were increased appetite and weight gain in six patients and sedation in

three patients.

In a 3-month open study of olanzapine (dosage range = 1.25–20 mg/day) in 25 subjects (ages 6–16 years) with pervasive

developmental disorder, significant global improvement was reported. The most common side effect was weight gain (mean

= 4.8 kg) (Kemner et al. 2002).

Olanzapine was compared with haloperidol in a 6-week open trial in 12 children (ages 4–11 years) with autistic disorder

(Malone et al. 2001). Both the olanzapine treatment (mean dosage = 7.9 mg/day) and the haloperidol treatment (mean

dosage = 1.4 mg/day) reduced symptoms of social withdrawal and stereotypies and improved speech and object relations.

Quetiapine

The effectiveness of quetiapine (dosage range = 100–350 mg/day) was assessed in a 16-week open-label trial in six children

with autistic disorder (Martin et al. 1999). No significant behavioral improvements were found from baseline to endpoint.

Only two subjects completed the full 16 weeks of treatment; subjects terminated early because of nonresponse and sedation.

One patient had a possible seizure during the fourth week of treatment; other side effects included behavioral activation,

increased appetite, and weight gain.

In a 12-week open-label study of quetiapine of nine adolescents (mean age = 14.6 years) with autistic disorder, only two

patients were much or very much improved at study endpoint (Findling et al. 2004). The most common side effects reported

were sedation and weight gain.

Ziprasidone

The use of ziprasidone (mean daily dose = 59.23) for the treatment of autistic children, adolescents, and young adults was

evaluated in an open-label study of 12 patients (ages 8–20 years) for at least 6 weeks (McDougle et al. 2002). Fifty percent

of patients were responders based on a CGI scale rating of much improved or very much improved. Transient sedation was

the most common side effect.

Clozapine

A case series of three children with autistic disorder treated with clozapine (up to 100 mg/day) for 3 months reported a 40%

improvement in measures of abnormal object relationships, negativism, fidgetiness, and hyperactivity. After 8 months of

clozapine treatment (mean daily dose = 200 mg), two of the children showed a substantial improvement in language and

communication skills (Zuddas et al. 1996).

Typical Antipsychotics

Haloperidol

Haloperidol has been the most widely studied typical antipsychotic for the treatment of autism in children and adolescents. In

double-blind, placebo-controlled studies, haloperidol has been shown to be significantly superior to placebo in reducingPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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maladaptive behaviors and facilitating learning on discrimination tasks (Campbell et al. 1982); in increasing retention of

discrimination learning and decreasing maladaptive behaviors in the classroom (L. T. Anderson et al. 1984); in decreasing

occurrence of stereotypies and increasing orienting reactions of children (Cohen et al. 1980); and in decreasing hyperactivity,

temper tantrums, withdrawal, and stereotypies and increasing relatedness (L. T. Anderson et al. 1989). Optimal dosages of

haloperidol in these studies ranged from 0.25 to 4 mg/day. The most common side effects were sedation, increased

irritability, and acute dystonic reactions. Weight gain was modest (0.2 kg) in autistic children who received haloperidol

0.25–3.5 mg/day for a 6-month period (Silva et al. 1993).

Haloperidol was compared with behavioral therapy in a double-blind, placebo-controlled trial in 40 children (ages 2–7 years)

with autistic disorder (Campbell et al. 1978). For children older than 4.5 years, haloperidol was found to be significantly

superior to placebo in reducing the severity of withdrawal behaviors and stereotypies. The combination of behavior therapy

and haloperidol was the most effective in facilitating the acquisition of imitative speech.

The long-term efficacy of haloperidol was assessed in 48 children (ages 2–8 years) with autism who received haloperidol for

6 months (Perry et al. 1989). Haloperidol remained effective throughout the 6-month treatment period, and it was equally

effective whether it was given continuously or on a discontinuous schedule consisting of 5 days on haloperidol and 2 days on

placebo. Children who had symptoms of irritability, angry and labile affect, and uncooperativeness were the best responders

to haloperidol.

Reversible haloperidol-related dyskinesias have been reported in 29% of autistic children (Campbell et al. 1988a). Factors

related to the development of haloperidol-induced dyskinesias in acute studies of autistic children include female gender

(Campbell et al. 1988a) and prenatal and perinatal complications (Armenteros et al. 1995). In a long-term prospective study

of haloperidol treatment for 118 children with autism, withdrawal dyskinesias developed in 40 children (33.9%), with 20

children having more than one dyskinetic episode (Campbell et al. 1997). Female gender, prenatal and perinatal

complications, greater cumulative haloperidol dose, and/or longer exposure to haloperidol increased the risk of withdrawal

dyskinesias.

Pimozide

Pimozide was compared with haloperidol and placebo in a controlled crossover trial that included 34 children with autistic

disorder (Naruse et al. 1982). Pimozide and haloperidol were significantly more effective than placebo in reducing

maladaptive behavior, such as lack of interest, self-centeredness, and aggressiveness. There was no significant difference

between pimozide and haloperidol. An open study of 8 children treated with pimozide (mean dosage = 4.9 mg/day) reported

improved behavioral functioning (Ernst et al. 1992).

Serotonin Reuptake Inhibitors

The only placebo-controlled studies of serotonin reuptake inhibitors are with fluoxetine and fluvoxamine treatment of autistic

disorders.

Fluoxetine

The efficacy of liquid fluoxetine was assessed to treat repetitive behaviors in children and adolescents with autism spectrum

disorders. Forty-five youths were randomly assigned to two 8-week acute phases in a double-blind crossover study.

Low-dose liquid fluoxetine (mean dosage = 9.9 mg/day) was superior to placebo in reducing repetitive behaviors (Hollander

et al. 2005).

In an open study of fluoxetine (dosage range = 20 mg every other day to 80 mg/day) in 23 patients (ages 7–28 years) with

autistic disorder, 15 patients (65%) experienced significant clinical global improvement (Cook et al. 1992). The most

common side effects were restlessness, hyperactivity, agitation, decreased appetite, and insomnia. Case reports and a

retrospective chart review of fluoxetine treatment for youths with autistic disorder reported improvements in irritability,

stereotypies, and inappropriate speech (Fatemi et al. 1998; Ghaziuddin et al. 1991; Todd 1991).

Fluvoxamine

A double-blind, placebo-controlled study of fluvoxamine treatment (mean dosage = 106.9 mg/day) in 34 children and

adolescents with autistic disorder did not find significant clinical improvement with fluvoxamine (McDougle et al. 2000a).

Sertraline

Open-label sertraline (dosage range = 25–50 mg/day) was administered to nine children with autistic disorder (Steingard et

  1. 1997). Eight of the nine patients showed clinically significant improvement in ability to tolerate changes in their routine or

environment without displaying symptoms of anxiety, irritability, or agitation. Clinical response tended to occur in 2–8

weeks. In two cases, behavioral worsening was observed when the dosage was raised to 75 mg/day.

Citalopram

Seventeen children with autistic spectrum disorders were treated with citalopram for at least 2 months (Couturier and

Nicolson 2002). Ten children (59%) were judged to be much or very much improved on measures of aggression, anxiety, and

stereotypies. Common adverse side effects were insomnia and agitation.

Paroxetine

A child with autistic disorder who received paroxetine (up to 10 mg/day) showed a significant reduction in preoccupations

and temper tantrums within 6 weeks of treatment initiation (Posey et al. 1999). Snead et al. (1994) described a case of an

adolescent with autistic disorder whose symptom of self-injurious behavior resolved within 2 weeks of treatment initiation

with paroxetine (20 mg/day).Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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Escitalopram

In a 10-week open-label study, 28 youths (ages 6–17 years) with pervasive developmental disorder received escitalopram.

There was significant improvement in irritability and clinical global functioning. Twenty-five percent of youths responded at

escitalopram daily doses less than 10 mg, and 36% of youths responded at doses greater than or equal to 10 mg (Owley et

  1. 2005).

Other Antidepressants

Clomipramine

The results of controlled trials with clomipramine in the treatment of autistic disorder have yielded mixed results.

Clomipramine and haloperidol were compared in a placebo-controlled crossover study for 7 weeks with active treatment

(Remington et al. 2001). Thirty-six patients (ages 10–36 years) with autistic disorder were randomly assigned to

clomipramine (mean dosage = 128.4 mg/day; range = 100–150 mg/day), haloperidol (mean dosage = 1.3 mg/day; range =

1–1.5 mg), or placebo. A significant advantage for haloperidol was found on global measures of autistic symptom severity

and on specific measures of irritability and hyperactivity. Clomipramine was comparable to haloperidol only in patients who

were able to complete a full therapeutic trial. However, significantly fewer patients receiving clomipramine versus

haloperidol were able to complete the trial (37.5% vs. 69.7%, respectively) for reasons related to inefficacy, side effects, or

behavioral problems.

Clomipramine was compared with desipramine for the treatment of autistic disorder in a double-blind crossover study with a

sample of 30 patients ranging from 6 to 23 years of age (Gordon et al. 1993). Clomipramine was significantly superior to both

desipramine and placebo on ratings of autistic symptoms, including stereotypies, anger, and compulsive ritualized behaviors.

No differences were found between desipramine and placebo. One patient had a grand mal seizure during the second week of

clomipramine therapy. Clomipramine dosage reduction was necessary in two patients because of QT interval prolongation in

one case and severe tachycardia in the other. Increased irritability, temper outbursts, and aggression occurred in 8 of the 12

subjects receiving desipramine.

Mirtazapine

In an open-label study of mirtazapine (dosage range = 7.5–45 mg/day; mean = 30.3 mg/day) in 26 patients (ages 3–23

years) with pervasive developmental disorders, 9 patients (34.6%) were judged much or very much improved in symptoms

of aggression, self-injury, irritability, hyperactivity, anxiety, depression, and insomnia (Posey et al. 2001). Mirtazapine did

not improve symptoms of social or communication impairment. Common side effects included increased appetite, irritability,

and transient sedation.

Venlafaxine

The effectiveness of venlafaxine was assessed in an open retrospective study of 10 patients (ages 3–21 years) with pervasive

developmental disorders (Hollander et al. 2000). Six of 10 patients who received venlafaxine (mean dosage = 24.4 mg/day;

range = 6.25–50 mg/day) over an average of 5 months were much or very much improved. Improvements were shown in

repetitive behaviors, restricted interests, social deficits, communication and language function, inattention, and

hyperactivity. Side effects of venlafaxine included behavioral activation, nausea, inattention, and polyuria.

Mood Stabilizers

Lamotrigine

Twenty-eight children (ages 3–11 years) with autistic disorder participated in a double-blind, placebo-controlled study of

lamotrigine (mean maintenance dosage = 5 mg/kg/day) for a 12-week study period (Belsito et al. 2001). There were no

significant differences between the lamotrigine and placebo groups on severity of behavioral symptoms. Insomnia and

hyperactivity were the most frequently reported side effects. No children in the study were withdrawn because of rash.

Lithium

Case studies have reported the effectiveness of lithium in improving manic-like symptoms in children with autism

(Kerbeshian et al. 1987; Shafey 1986; Steingard and Biederman 1987).

Anxiolytics

Buspirone

In a 6- to 8-week open trial, 22 children and adolescents with pervasive developmental disorders or autistic disorder were

treated with buspirone (dosage range = 15–45 mg/day) (Buitelaar et al. 1998). Sixteen patients (73%) showed moderate to

marked improvement in anxiety and irritability symptoms. In a 4-week open trial comparing buspirone with fenfluramine or

methylphenidate in children with autistic disorder, two of three children who received buspirone showed improvement in

hyperactivity (Realmuto et al. 1989). One patient who received fenfluramine had a slight decrease in hyperactivity.

Behavioral deterioration was found in one of two patients treated with methylphenidate.

Other Agents

Flumazenil

One of two children who received flumazenil (a benzodiazepine antagonist) showed a mild increase in interpersonal

engagement (Wray et al. 2000). No adverse effects were seen in either child.Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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Naltrexone

Double-blind, placebo-controlled trials of naltrexone in the treatment of children with autistic disorder have reported modest

improvement of symptoms, including reductions in autistic symptomatology (Scifo et al. 1996); decreased self-injurious

behavior, improved socialization, and increased attentiveness and communication (Leboyer et al. 1992); improved

socialization, decreased withdrawal, increased proximity seeking, increased eye contact, increased attentiveness, and

decreased restlessness and affective lability (Leboyer et al. 1990); decreased irritability (Willemsen-Swinkels et al. 1995);

decreased hyperactivity and irritability (Willemsen-Swinkels et al. 1996); decreased restlessness and hyperactivity (Kolmen

et al. 1995); decreased self-injury (Barrett et al. 1989); decreased hyperactivity (Campbell et al. 1993); and global

improvement as assessed by teacher ratings (Kolmen et al. 1997). Dosage ranges of naltrexone were 0.5–1.5 mg/kg in these

studies. There were no significant changes in cardiovascular parameters of heart rate or systolic blood pressure for children

with autism treated with naltrexone (Herman et al. 1993).

In other controlled trials, naltrexone demonstrated no superiority over placebo in producing beneficial changes in social

behavior (Willemsen-Swinkels et al. 1995), social and stereotypic behavior (Willemsen-Swinkels et al. 1996), social behavior

and activity level (Bouvard et al. 1995), discrimination learning (Campbell et al. 1993), and communication (Feldman et al.

1999).

During 6-month continuation treatment for naltrexone-responsive children with autism, the hyperactivity-reducing effect of

naltrexone was maintained (Willemsen-Swinkels et al. 1999). However, no additional gains in social interaction,

communication, or stereotypic behaviors were observed after the 4-week acute phase. Moreover, parents did not request to

continue treatment with naltrexone for their autistic children. These researchers therefore did not advocate the routine use of

naltrexone for children with autism.

Clonidine

A double-blind, placebo-controlled crossover study with transdermal clonidine (0.005 mg/kg/day or placebo by a weekly

transdermal patch) in nine patients (ages 5–33 years) with autistic disorder was conducted for a total 8-week active period

(Fankhauser et al. 1992). Significant improvement with clonidine, compared with placebo, was found on measures of social

relationship, affectual responses, and sensory responses. In a double-blind, placebo-controlled crossover trial of clonidine in

eight children with autistic disorder, clonidine was found to be modestly effective in reducing irritability and hyperactivity

(Jaselskis et al. 1992).

Methylphenidate

There have been two small double-blind, placebo-controlled crossover studies of methylphenidate for the treatment of

autistic disorder in children ranging in age from 5 to 11 years. In a study that included 10 children, a modest but statistically

significant improvement in hyperactivity was found with methylphenidate treatment, compared with placebo (Quintana et al.

1995). No significant side effects, such as worsening of behavior or of stereotypic movements, were observed. In a study that

included 13 children, 6 patients had a significant decrease in hyperactivity, stereotypies, and inappropriate speech (Handen

et al. 2000). However, there were no changes found on the Child Autism Rating Scale. Significant adverse side effects

occurred in some children and included social withdrawal and irritability, particularly at a methylphenidate dosage of 0.6

mg/kg/day.

Fenfluramine

Fenfluramine, a serotonin agonist, has been studied in autism. It was marketed as an anti-obesity agent but was withdrawn

from the market because of pulmonary hypertension when used in combination with phentermine.

Following the report of significant clinical improvement and an increase in the IQs of three boys who received fenfluramine

(E. Geller et al. 1982), a number of double-blind, placebo-controlled studies were conducted to assess the efficacy and safety

of fenfluramine in the treatment of children with autism. The results of these studies have been mixed, with modest

improvements in autistic symptoms found in a few studies.

Children who received fenfluramine, compared with placebo, were reported to have decreased hyperactivity, decreased

stereotypies, increased eye contact, increased socialization, and increased use of appropriate language (Ritvo et al. 1983);

decreased motor activity, decreased distractibility, and improved mood (August et al. 1984); increased social awareness, eye

contact, and attention to schoolwork (Ritvo et al. 1984); increased IQ, increased communication, and increased socialization

(Ritvo et al. 1986); decreased respiratory stereotypies (Gastaut et al. 1987); reduction in motor activity, anxiety, mood

disturbance, and distractibility (Barthelemy et al. 1989); improved attention span and activity level (Groden et al. 1987);

increased language and awareness of environment in children with IQs above 40 (Stubbs et al. 1986); and decreased activity

level, increased attention, and decreased hyperactivity (August et al. 1985). Open studies with fenfluramine reported

improvement in relatedness, hyperactivity, irritability, and aggressiveness (Campbell et al. 1986) and improved

communication and social awareness (Klykylo et al. 1985).

However, numerous reports of controlled trials failed to show significant superiority of fenfluramine relative to placebo in the

treatment of children with autistic disorder (Beeghly et al. 1987; Beisler et al. 1986; Campbell et al. 1988b; Coggins et al.

1988; Ekman et al. 1989; Ho et al. 1986; Kohler et al. 1987; Leventhal et al. 1993; Ross et al. 1987; Sherman et al. 1989;

Stern et al. 1990; Yarbrough et al. 1987). The average dose of fenfluramine was 1.5 mg/day in these studies.

In a review of the literature, Aman and Kern (1989) concluded that there was no evidence that IQ was increased by

fenfluramine. Fenfluramine may enhance social relatedness, reduce stereotypic behavior, lessen overactivity, and improve

attention span in some children, although the results are inconsistent. In another review, du Verglas et al. (1988) concluded

that fenfluramine may have positive effects in reducing hyperactivity and stereotypic behaviors in 33% of children and notedPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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that the best responders were children with the highest baseline IQs.

There had been concern about the untoward effects of fenfluramine in children with autism. Realmuto et al. (1986) described

listlessness, food refusal, and stomach upset in the initial phase of treatment, followed by irritability, agitation, and crying

with continued medication use. Decreased appetite, lethargy, irritability, and behavioral regression were also reported with

fenfluramine use (Piggott et al. 1986). In a 2-year follow-up of autistic children treated with fenfluramine, reasons for

discontinuing the medication included development of tolerance, appetite and weight changes, and the need for other

interventions, particularly other psychotropic medications (Varley and Holm 1990). Significant concern had also been raised

about possible neurotoxicity with the use of fenfluramine in children, based on studies of the neurotoxic effects of

fenfluramine in animals (Schuster et al. 1986).

Famotidine

The efficacy of famotidine, a histamine2 receptor antagonist, was assessed in a randomized, double-blind, placebo-controlled

crossover study in nine children (ages 3–8 years) with a diagnosis of pervasive developmental disorder (Linday et al. 2001).

The maximum daily dose of famotidine was 100 mg (2 mg/kg/day). Four of nine children (44%) randomly assigned to

famotidine showed increased social interaction and affection. Children with marked stereotypy did not respond.

Amantadine

Thirty-nine children and adolescents (ages 5–19 years) with autistic disorder were randomly assigned in a 9-week

double-blind, placebo-controlled trial to amantadine (5 mg/kg/day) or placebo (King et al. 2001). Parent ratings did not

demonstrate a statistically significant change in irritability and hyperactivity, with a mean placebo response rate of 37%

versus 47% for amantadine. However, clinician ratings of improvement in behavioral changes of hyperactivity and

inappropriate speech were significantly higher in the amantadine group than in the placebo group. Overall clinical functioning

was rated higher in the amantadine group than in the placebo group (53% improved vs. 25% improved, respectively). The

most common side effects were insomnia and somnolence.

Amisulpride

Nine children (ages 4–13 years) with autistic disorder participated in a randomized, double-blind crossover trial of

amisulpride (1.5 mg/kg/day) and bromocriptine (0.15–0.20 mg/kg/day) for two consecutive 8-week treatment periods

(Dollfus et al. 1992). Neither amisulpride nor bromocriptine showed a statistically significant effect on global autism scores.

However, the two agents differed in their effects on specific autistic symptoms, with amisulpride having a more positive

effect on behavioral inhibition and withdrawal symptomatology and bromocriptine having a more positive effect on motor

hyperactivity and attention symptoms. The most common side effects were insomnia and anorexia for amisulpride and

bromocriptine, respectively. Amisulpride is not available in the United States or Canada.

Sulpiride

Sulpiride (up to 400 mg/day) was reported to significantly reduce abnormal speech and withdrawal in a teenager with

autistic disorder (Scott and Eames 1988). Sulpiride is not available in the United States or Canada.

Secretin

Following the report of marked improvement in socialization and communication skills in three children with autism who had

received secretin during an upper endoscopy (Horvath et al. 1998), there was a flurry of media reports about the success of

this neuropeptide hormone. It is estimated that approximately 2,500 children have received secretin injections for the

treatment of autism (Kastner 1998). However, randomized, double-blind, placebo-controlled trials of single-dose intravenous

secretin for the treatment of children with autism have produced no evidence that secretin is effective for the treatment of

autism or pervasive developmental disorder in 174 children and adolescents who participated in the studies. There have been

no significant changes in parents’ perceptions of autistic behaviors or language skills (Coniglio et al. 2001), no improvement

in either primary or secondary features of autism (Sandler et al. 1999), and no change in social and communication skills

(Owley et al. 2001).

The efficacy of repeated doses of secretin in the treatment of autism was assessed in a double-blind, placebo-controlled trial

in 64 children (ages 2–7 years) who received two doses of secretin 6 weeks apart (Roberts et al. 2001). No differences

between the secretin and placebo groups were found on measures of language, cognition, or autistic symptomatology.

Similarly, in a controlled study of 12 children with autism, there were no significant differences between secretin and placebo

groups on language or social assessments (Corbett et al. 2001).

Clinical Recommendations for Autistic Disorder and Other Pervasive Developmental Disorders

There is no evidence that pharmacotherapy is effective in treating the core social and communication deficits in autistic

disorder. However, medications have been shown to be useful in treating associated symptoms, such as hyperactivity,

inattention, stereotypies, self-injurious behavior, tantrums, aggression, mood lability, and anxiety. Antipsychotics may

decrease withdrawal, stereotypies, and aggression and may facilitate learning. To date, the most data available support the

use of risperidone for treating irritability, aggression, self-injurious behavior, temper tantrums, and mood lability associated

with autistic disorder in children and adolescents. Serotonin reuptake inhibitors and other antidepressants have been shown

to reduce compulsions, anxiety, and depression in children with autism. In some cases, naltrexone may reduce hyperactivity,

irritability, and self-injurious behavior. Stimulants may increase attention span and reduce hyperactivity. Given concerns

about the potential neurotoxicity and limited effectiveness of fenfluramine, this agent should be used with extreme caution in

children with autism. Secretin is not recommended for use because it has no established efficacy.

There are limited data on the long-term use of pharmacotherapy in children with autism. After receiving anPrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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intermediate-length (4–6 months) course of treatment with risperidone, children withdrawn from the medication through

placebo substitution had high relapse rates (Research Units on Pediatric Psychopharmacology Autism Network et al. 2005;

Troost et al. 2005). Therefore, clinicians must weigh the risk–benefit ratio of maintenance medication treatment in this

population and carefully monitor children for side effects.

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APPENDIX

Psychotropic Medications Commonly Prescribed for Children and Adolescents

This Appendix describes common classes of psychotropic medications used to treat children and adolescents. Dosages,

common side effects, and monitoring schedules are presented for each medication class.

Antidepressants

Dosage and Monitoring

The starting and target doses of antidepressants for children and adolescents are listed in Table 63–1.

TABLE 63–1. Clinical use of antidepressants in children and adolescents

Typical starting dose (mg)

Medication Child Adolescent Target dose (mg/day)

Citalopram 5–10 10 20–40

Escitalopram 5 10 10–20

Fluoxetine 5–10 10 20–40

Paroxetine 5–10 10 20–40

Sertraline 25 50 100–200

Mirtazapine 15 15 30–45

Venlafaxine 37.5 37.5 150–225

Bupropion 50 bid 50 bid 100–200

Premedication laboratories include complete blood count, blood chemistries, and liver function tests. Blood pressure should

be monitored during dose titration with venlafaxine.

The FDA has issued the following black box warning, which applies to all antidepressants (U.S. Food and Drug Administration

2007):

Antidepressants increased the risk compared to placebo of suicidal thinking and behavior (suicidality) in children, adolescents, and

young adults in short-term studies of major depressive disorder (MDD) and other psychiatric disorders. Anyone considering the use of

[Name of Antidepressant] or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical

need. Short-term studies did not show an increase in the risk of suicidality with antidepressants compared with placebo in adults

beyond age 24 years; there was a reduction in risk with antidepressants compared with placebo in adults ages 65 years and older.

Depression and certain other psychiatric disorders are themselves associated with increases in the risk of suicide. Patients of all ages

who are started on antidepressant therapy should be monitored appropriately and observed closely for clinical worsening, suicidality, or

unusual changes in behavior. Families and caregivers should be advised of the need for close observation and communication with the

prescriber.

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Common side effects of SSRIs are headache, nausea, abdominal pain, dry mouth, insomnia, and somnolence (Emslie et al.

2002; Keller et al. 2001; Wagner et al. 2003a, 2004b, 2006a). Potential serious adverse events include serotonin syndrome,

extrapyramidal symptoms (tics, myoclonus), amotivational syndrome, and increased bleeding (Hammerness et al. 2006). A

major advantage of SSRIs is their safety in overdose (Barbey and Roose 1998).

Common side effects of mirtazapine are somnolence, increased appetite, weight gain, dizziness, dry mouth, and constipation

(Green 2001).

Common side effects of venlafaxine include anorexia, abdominal pain, insomnia, somnolence, dizziness, dry mouth, increased

sweating and nervousness, and elevated blood pressure with dose increase (Emslie et al. 2007a; Green 2001).

Common side effects of bupropion are headache, nausea, rash, irritability, drowsiness, fatigue, and anorexia (Barrickman et

  1. 1995; Conners et al. 1996; Daviss et al. 2001). Bupropion is contraindicated in children with seizure disorders, since it

may lower the seizure threshold.

Atomoxetine

Dosage and Monitoring

Atomoxetine can be given in the late afternoon or evening, whereas stimulants generally cannot; atomoxetine may have less

pronounced effects on appetite and sleep than stimulants, though it may produce relatively more nausea or sedation.

Gastrointestinal distress can be minimized by taking the medication after a meal. In children and young adolescents,

atomoxetine is initiated at a dosage of 0.3 mg/kg/day and titrated over 1–3 weeks to a maximum dosage of 1.2–1.8

mg/kg/day (Kratochvil et al. 2003). Adults or adult-sized adolescents should be started on atomoxetine 40 mg daily and

titrated to 80–100 mg/day of atomoxetine over 1–3 weeks, if needed (Kratochvil et al. 2003). Atomoxetine’s labeling

recommends both once-daily and twice-daily dosing, although its elimination half-life of 5 hours (as well as clinical

experience) suggests that twice-daily dosing (early A.M. and early P.M) is more effective and less prone to cause side effects.

Michelson et al. (2002) showed that while atomoxetine was superior to placebo at week 1 of the trial, its greatest effects

were observed at week 6, suggesting that patients should be maintained at the full therapeutic dose for at least several

weeks in order to observe the drug’s full effects.

Side Effects

Side effects of atomoxetine that occurred more often than placebo in clinical trials included gastrointestinal distress,

sedation, and decreased appetite. These can generally be managed by dosage adjustment and often attenuate with time. On

December 17, 2004, the FDA required that a warning be added to atomoxetine due to reports of two patients (an adult and

child) who developed severe liver disease (U.S. Food and Drug Administration 2006a). Both patients recovered. The FDA has

also issued an alert regarding suicidal thinking with atomoxetine in children and adolescents (U.S. Food and Drug

Administration 2005). A black box warning is included in the package insert. In 12 controlled trials involving 1,357 patients

on atomoxetine and 851 on placebo, the average risk of suicidal thinking was 4 per 1,000 in the atomoxetine-treated group

versus none in the placebo group.

Atypical Antipsychotics

Dosage and Monitoring

Typical starting and target dosages of atypical antipsychotics are listed in Table 63–2.

TABLE 63–2. Clinical use of atypical antipsychotics in children and adolescents

Medication Typical starting dose (mg) Target dose (mg/day)

Clozapine 25 twice daily 200–400

Olanzapine 2.5 twice daily 10–20

Quetiapine 50 twice daily 400–600

Risperidone 0.25 twice daily 1–2

Ziprasidone 20 twice daily 80–120

Aripiprazole 2.5–5.0 at bedtime 10–25

Source.DelBello and Kowatch 2006.

Premedication laboratories include complete blood count, blood chemistries, and liver function tests. In addition, the

American Diabetes Association et al. (2004) recommendations should be followed. These include baseline body mass index

(BMI), waist circumference, blood pressure, and fasting glucose and lipid panels. BMI should be followed monthly for 3

months, and then measured quarterly. Blood pressure, fasting glucose, and lipid panels should be followed up at 3 months

and then yearly. Monitoring should also be done for extrapyramidal side effects.

Side Effects

Side effects of atypical antipsychotics include weight gain, dyslipidemia, insulin resistance and diabetes, hyperprolactinemia,

extrapyramidal side effects and akathisia, QTc prolongation, sedation, liver toxicity, neutropenia, and neuroleptic malignant

syndrome. Clozapine has also been associated with seizures, agranulocytosis, and myocarditis (Correll et al. 2006).

ClonidinePrint: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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Dosage and Monitoring

Clonidine is initiated at 0.05 mg/day, with dose increases of 0.05 mg every 3 days. Typical dosages for ADHD are in the range

of total 0.15–0.3 mg/day (on a three-times-per-day schedule). Transdermal clonidine delivers doses of 0.1, 0.2, or 0.3

mg/day. During initial treatment, a temporary worsening of motor and phonic tics in Tourette’s syndrome may occur, which

usually resolves within 2–4 weeks. Clonidine should be tapered by 0.05 mg/day upon discontinuation (Hunt et al. 1990).

Given the reports of adverse cardiovascular side effects in children taking clonidine, recommendations have been made

regarding cardiovascular monitoring (Cantwell et al. 1997). Pulse and blood pressure should be measured at baseline, weekly

during titration of dose, and every 4–6 weeks during maintenance treatment. ECGs should be obtained at baseline and after

the maximal dose of clonidine is achieved. Abrupt discontinuation of clonidine is not recommended, because it increases the

risk of adverse cardiovascular side effects, particularly hypertension.

Side Effects

Common side effects of clonidine in children are sedation, depression, irritability, hypotension, sleep disturbance, dry mouth,

and dizziness. Skin irritation and erythema are common with the clonidine patch (Connor et al. 1999; Hunt et al. 1990).

Rebound tachycardia and hypertension may occur if clonidine is abruptly discontinued, particularly after chronic use (Popper

2000).

Safety concerns have been raised about the combination of clonidine and methylphenidate, following the report of four cases

of sudden death in children on this medication combination (Cantwell et al. 1997; Fenichel 1995). Swanson et al. (1995)

described two types of clonidine-related cardiovascular side effects. In one type, fatigue and sedation were associated with a

decrease in pulse and blood pressure and changes in ECG. In the other, tachycardia and tachypnea occurred, which led to

anxiety, fever, and changes in mental status. Adverse cardiovascular side effects, including bradycardia and depressed level

of consciousness, have been reported with clonidine overdose in children (Kappagoda et al. 1998). However, in a

retrospective study of 42 children treated with clonidine alone or clonidine plus stimulants, no systematic effects were found

on ECG parameters of pulse rate or QTc intervals (Kofoed et al. 1999).

Guanfacine

Dosage and Monitoring

Guanfacine is initiated at a daily dose of 0.5 mg, with an upward titration of 0.5 mg every 3 days, based on clinical response

and tolerability, to a maximum daily dose of 4 mg (Hunt et al. 1995).

Pulse and blood pressure should be monitored during guanfacine treatment. Guanfacine should be tapered over a 4-day

period upon discontinuation.

Side Effects

Common side effects of guanfacine in children are sedation, fatigue, headache, dizziness, stomachache, and decreased

appetite (Chappell et al. 1995b; Hunt et al. 1995; Melmed et al. 2006; Scahill et al. 2001). Rebound hypertension,

nervousness, and anxiety may occur if guanfacine is abruptly discontinued (Green 2001).

Mood Stabilizers

Dosage and Monitoring

The starting dose and target doses and therapeutic serum levels of mood stabilizers are listed in Table 63–3.

TABLE 63–3. Clinical use of mood stabilizers in children and adolescents

Medication Typical starting dose

(mg)

Target dose

Therapeutic serum

level

Carbamazepine 7 mg/kg/day Based on response and serum level 8–11 g/L

Lamotrigine 12.5 mg once daily Based on response

NA

Lithium 25 mg/kg/g (2–3 daily

doses)

30 mg/kg/day (2–3 daily doses) 0.8–1.2 mEq/L

Oxcarbazepine 150 mg twice daily 20–29 kg (900 mg/day) 30–39 kg (1,200 mg/day) >39 kg

(1,800 mg/day)

NA

Topiramate 25 mg once daily 100–400 mg/day

NA

Valproic acid, divalproex

sodium

20 mg/kg/day (2 daily

doses)

20 mg/kg/day (2–3 daily doses) 90–120 g/mL

Source.DelBello and Kowatch 2006.

Premedication laboratories in general include complete blood count, liver function tests, and pregnancy test (for females).

For lithium, baseline thyroid function tests, electrolytes, urinalysis, blood urea nitrogen, creatinine, and serum calcium should

also be obtained. Lithium levels, renal function, thyroid function, and urinalysis should be monitored every 3–6 months.

For divalproex, drug serum levels, complete blood count, and liver function tests should be monitored every 3–6 months.

Given concerns about a possible relationship between divalproex and polycystic ovarian syndrome (PCOS) (Rasgon 2004),

female adolescents taking divalproex should be monitored for signs of PCOS, including menstrual abnormalities, weight gain,Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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acne, and hirsutism (DelBello and Kowatch 2006; McClellan et al. 2007). Parents and their female adolescents should be

apprised about this possible association prior to initiating medication.

For oxcarbazepine, children should be monitored for hyponatremia.

Side Effects

Common side effects of lithium in children and adolescents include hypothyroidism, nausea, polyuria, polydypsia, acne,

tremor, and weight gain (DelBello and Kowatch 2006).

Common side effects of divalproex in children and adolescents include weight gain, nausea, sedation, and tremor (DelBello

and Kowatch 2006). Concern has been raised about a possible association between divalproex and PCOS (Rasgon 2004).

Other potential side effects of concern are hepatic failure, pancreatitis, thrombocytopenia, behavioral deterioration, and hair

loss (Davanzo and McCracken 2000; Green 2001).

Side effects of topiramate include decreased appetite, weight loss, nausea, diarrhea, paresthesias, somnolence, and

word-finding difficulties (DelBello and Kowatch 2006; DelBello et al. 2005).

Side effects of oxcarbazepine in children include dizziness, nausea, somnolence, diplopia, fatigue, and rash (Wagner et al.

2006b). Hyponatremia is also a side effect of oxcarbazepine.

Common side effects of lamotrigine in children include ataxia, nausea, vomiting, and constipation. Of concern is the incidence

of serious rash, including Stevens-Johnson syndrome, in pediatric patients reported to be 1%. This high incidence of serious

rash may be attributable to the prior use of high doses of lamotrigine with concomitant divalproex (Messenheimer et al.

1998). The current dosing guidelines may reduce this rash incidence in pediatric patients.

Psychostimulants

Dosage and Monitoring

The American Academy of Child and Adolescent Psychiatry (2007) recently revised its parameters for the diagnosis and

treatment of attention-deficit/hyperactivity disorder ADHD). A wide variety of stimulant preparations are available; Table

63–4 describes their use in clinical practice. Each stimulant has a maximum dose suggested by the U.S. Food and Drug

Administration (FDA)–approved package insert, but higher off-label doses are commonly used with careful monitoring. In

terms of safety monitoring, pulse, blood pressure, weight, and height should be obtained at baseline and at least annually. No

laboratory measures or electrocardiogram (ECG) monitoring is required.

TABLE 63–4. Clinical use of psychostimulants in children and adolescents

Medication Dosage form Typical starting dose FDA

max/day

Off-label

max/day

Amphetamine preparations

Adderall 5, 7.5, 10, 12.5, 15, 20, 30

mg

3–5 yr: 2.5 mg qd

6 yr: 5 mg qd–bid

40 mg >50 kg: 60 mg

Dexedrine 5 mg 3–5 yr: 2.5 mg qd

6 yr: 5 mg qd-bid

40 mg >50 kg: 60 mg

DextroStat 5, 10 mg 3–5 yr: 2.5 mg qd

6 yr: 5 mg qd–bid

40 mg >50 kg: 60 mg

Dexedrine

Spansule

5, 10, 15 mg

6 yr: 5–10 mg qd–bid

40 mg >50 kg: 60 mg

Adderall XR 5, 10, 15, 20, 25, 30 mg

6 yr: 10 mg qd

30 mg >50 kg: 60 mg

Vyvanse 30, 50, 70 mg 30 mg qd

70 mg Not determined

Methylphenidate preparations

Focalin 2.5, 5, 10 mg 2.5 mg bid

20 mg 50 mg

Focalin XR 5, 10, 15, 20 mg 5 mg q A.M.

30 mg 50 mg

Methylin 5, 10, 20 mg 5 mg bid

60 mg >50 kg: 100 mg

Metadate ER 10, 20 mg 10 mg q A.M.

60 mg >50 kg: 100 mg

Methylin ER 10, 20 mg 10 mg q A.M.

60 mg >50 kg: 100 mg

Ritalin SR 20 mg 10 mg q A.M.

60 mg >50 kg: 100 mg

Metadate CD 10, 20, 30, 40, 50, 60 mg 20 mg q A.M.

60 mg >50 kg: 100 mg

Ritalin LA 20, 30, 40 mg 20 mg q A.M.

60 mg Not yet known

Concerta 18, 27, 36, 54 mg 18 mg q A.M.

72 mg 108 mg

Daytrana patch 10-, 15-, 20-, 30-mg

patches

Begin with 10-mg patch qd, then titrate up by patch

strength

30 mg Not yet known

Note. qd = once daily; bid = twice daily; q A.M. = every morning.Print: Chapter 63. Treatment of Child and Adolescent Disorders http://www.psychiatryonline.com/popup.aspx?aID=435386&print=yes…

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Side Effects

Common side effects of psychostimulants are insomnia, diminished appetite, weight loss, irritability, abdominal pain, and

headaches (American Academy of Child and Adolescent Psychiatry 2007). Rebound symptoms of worsening behavior may

occur when the effects of the short-acting psychostimulants dissipate. Switching to sustained-release or longer-acting

psychostimulants may ameliorate rebound symptoms.

There is no evidence that psychostimulants increase substance abuse in youths with ADHD. On the contrary, youths with

ADHD who were treated with psychostimulants were at less risk for developing substance abuse than those youths with

ADHD who did not receive stimulants (Wilens et al. 2003a). Motor tics may develop during treatment with stimulants, but one

study reported no increase in tics for children with or without preexisting tics who received typical clinical doses of

methylphenidate compared with placebo (Law and Schachar 1999).

The FDA and its Pediatric Advisory Committee have reviewed data regarding psychiatric adverse events to stimulant

medication (U.S. Food and Drug Administration 2006b). Data from both controlled trials and post-marketing safety data from

sponsors and the FDA Adverse Events Reporting System (AERS), also referred to as MedWatch, were reviewed. For most of

the agents, these events were slightly more common in the active-drug group relative to placebo in the controlled trials, but

these differences did not reach statistical significance (Mosholder 2006). Postmarketing safety data were also reviewed for

reports of mania/psychotic symptoms, aggression, and suicidality (Gelperin 2006). Rare events of suicidal thoughts,

manic-like activation, or psychosis were reported. At the time, the Pediatric Advisory Committee did not recommend a black

box warning regarding psychiatric adverse events but did suggest clarifying labeling regarding these phenomena. No changes

to the stimulant medication labeling were suggested regarding suicide or suicidal ideation.

There have been rare reports of sudden death in patients taking stimulant medication The FDA has record of 20 cases of

sudden death with amphetamine or dextroamphetamine (14 children, 6 adults), while there were 14 pediatric and 4 adult

cases of sudden death with methylphenidate (Villalaba 2006). It is important to note that the rate of sudden death in the

general pediatric population has been estimated at 1.3–8.5 per 100,000 patient-years (Liberthson 1996). The rate of sudden

death among those with a history of congenital heart disease can be as high as 6% by age 20 years (Liberthson 1996).

Villalaba (2006) estimated the rate of sudden death in treated ADHD children for the exposure period January 1, 1992, to

December 31, 2004, to be 0.2 per 100,000 patient-years for methylphenidate, 0.3 per 100,000 patient-years for

amphetamine, and 0.5 per 100,000 patient-years for atomoxetine (the differences between the agents are not clinically

meaningful). Thus, the rate of sudden death of children on ADHD medications does not appear to exceed the base rate of

sudden death in the general population; therefore, cardiac monitoring of healthy children during treatment with stimulants is

not required. Children with preexisting heart disease (or significant symptoms suggesting the condition) should obtain a

cardiology consultation prior to starting a stimulant.

Poulton (2005) reviewed growth data and concluded that stimulant treatment may be associated with a reduction in

expected height gain, at least in the first 1–3 years of treatment. The National Institute of Mental Health (NIMH) Multimodal

Treatment of ADHD (MTA) study showed reduced growth rates in ADHD patients after 2 years of stimulant treatment

compared with patients who received no medication (MTA Cooperative Group 2004), and these deficits persisted at 36

months (MTA Cooperative Group 2007). The PATS study followed a group of 140 preschoolers who received methylphenidate

for up to a year for ADHD (Swanson et al. 2006b). The subjects had less than expected mean gains in height (–1.38 cm) and

weight (–1.3 kg). Charach et al. (2006) found that higher doses of stimulant correlated with reduced gains in height and

weight and that the effect did not become significant until the dose in methylphenidate equivalents was >2.5 mg/kg/day for

4 years. Pliszka et al. (2006b) did not find that children with ADHD treated with monotherapy with either amphetamine or

methylphenidate showed any failure to achieve expected height; furthermore the two stimulant classes did not have any

differential effect on height, but amphetamine had somewhat greater effects on weight than methylphenidate. The subjects

in this study had drug holidays averaging 31% of time during their treatment course, which may have contributed to the lack

of effect of the stimulant on height.

In assessing for clinically significant growth reduction, it is recommended to use serial plotting of height and weight on

growth charts labeled with lines showing the major percentiles (5th, 10th, 25th, 50th, 75th, 90th, and 95th) (Mei et al.

2004). This should occur one to two times per year, and more frequently if practical. If the patient has a change in height or

weight that crosses 2 percentile lines, this suggests an aberrant growth trajectory. In these cases, a drug holiday should be

considered, if return of symptoms during weekends or summers does not lead to marked impairment of functioning. The

clinician should also consider switching the patient to another ADHD medication. It is important for the clinician to carefully

balance the benefits of medication treatment with the risks of small reductions in height gain, which as of yet have not been

shown to be related to reductions in adult height (Gittelman-Klein and Mannuzza 1988; Kramer et al. 2000; Weiss and

Hechtman 2003).

Copyright © 2009 American Psychiatric Publishing, Inc. All Rights Reserved.

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Introduction to Child & Adolescent Disorders

  • Overview of Child & Adolescent Disorders
  • Developmental Milestones and Their Importance
  • Introduction to Diagnostic Criteria and Tools
  • Quiz on Child & Adolescent Developmental Milestones
  • Factors Influencing Child & Adolescent Disorders

Foundations of Developmental Psychology

Assessment and Diagnosis in Pediatric Populations

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Integrative Approaches and Multidisciplinary Care

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