A Double-Blind Pilot Study of Risperidone in the Treatment of Conduct Disorder

Case Western Reserve University, Cleveland, Ohio, United States
Journal of the American Academy of Child & Adolescent Psychiatry (Impact Factor: 6.35). 05/2000; 39(4):509-16. DOI: 10.1097/00004583-200004000-00021
Source: PubMed

ABSTRACT To examine whether risperidone is superior to placebo in the treatment of youths with conduct disorder.
This was a 10-week, randomized, double-blind, placebo-controlled study with 2 parallel arms. Ten youths were randomly assigned to receive placebo and 10 youths were randomly assigned to receive risperidone. Patients were seen weekly throughout the trial. Medications could be increased at weekly intervals during the first 6 weeks of the study from an initial dose of 0.25 mg or 0.50 mg each morning, depending on patient weight. Patients weighing less than 50 kg had a maximum total daily dose of risperidone of 1.5 mg. Patients weighing 50 kg or greater had a maximum total daily dose of risperidone of 3.0 mg. The primary outcome measure was the Rating of Aggression Against People and/or Property Scale.
Risperidone was superior to placebo in ameliorating aggression on most measures. Risperidone was reasonably well tolerated, with none of the risperidone-treated patients developing extrapyramidal side effects.
These data provide preliminary evidence that risperidone may have efficacy in the treatment of youths with conduct disorder. Because of the small sample size and the brief length of this study, further research is necessary to confirm these findings.

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    • "Both in the USA and in Europe, prescription rates of SGAs to patients younger than 18 years of age are significantly higher than the prevalence of psychotic disorders (Rani et al., 2008; Kalverdijk et al., 2008; Zito et al., 2013). In fact, these medications are being prescribed for aggression, irritability, negativistic and hostile behaviour in various conditions, such as autism spectrum disorder, oppositional defiant disorder and conduct disorder (Olfson et al., 2012), when evidence of efficacy in " pure " conduct disorder (i.e., without co-morbid intellectual disability) is limited (Findling et al., 2000). Furthermore , many psychiatric disorders in youth persist across development (Costello et al., 2011), requiring long-term drug treatment. "
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