TABLE II Table II Published placebo-controlled studies of anti

TABLE II. Table II. Published placebo-controlled studies of antipsychotics for irritability. Dx, diagnosis; AUT, austistic disorder; PDD, pervasive developmental disorder not otherwise specified; PLA, placebo; RUPP, Research Units on Pediatric Psychopharmacology; … Antipsychotics are the most efficacious medications for the treatment of irritability in individuals with ASDs. Typical antipsychotics are more potent antagonists of dopamine-2 receptors. Atypical antipsychotics, which antagonize both dopamine and serotonin receptors, may have a decreased risk of extrapyramidal symptoms (EPS). Reports on the Inhibitors,research,lifescience,medical use of the typical antipsychotics, haloperidol

and pimozide, as well as the atypical antipsychotics, clozapine, risperidone, olanzapine, quetiapine, ziprasidone, aripiprazole, and paliperidone, in ASDs are reviewed in this section. see more haloperidol In

Inhibitors,research,lifescience,medical children and adolescents, haloperidol has been demonstrated to be efficacious in the short- and longterm treatment of symptoms associated with autism. In adults, haloperidol is superior to clomipramine in the management of irritability. Studies in children Inhibitors,research,lifescience,medical have shown that haloperidol is superior to placebo in reducing stereotypies and social withdrawal in children older than 4 years.52 Haloperidol has resulted in reduced rates of stereotypy and improved orientation,53 as well as decreased maladaptive behaviors.54 Older children respond more favorably to haloperidol compared with younger children, higher IQ is more predictive of a greater reduction in behavioral symptoms, and there was a greater reduction of symptoms when the severity of illness was greater.55 Inhibitors,research,lifescience,medical Adverse effects have included dose-related sedation and rare dyskinesias. Development of long-term dyskinesias has not been found to be related to symptom reduction during Inhibitors,research,lifescience,medical short-term treatment.55 Haloperidol has also been shown to be efficacious

in the long-term treatment (at least 6 months) of maladaptive behaviors in children, with the greatest response occurring in those with irritability, labile and angry affect, and uncooperativeness.56 However, 34% of subjects developed dyskinesias in another study of longterm treatment.57 Female gender, treatment length, and higher doses increased mafosfamide the risk of developing dyskinesias. In comparison studies, haloperidol was more effective than fluphenazine at reducing withdrawal, aggression and stereotypies in children with autism, although adverse effects included acute dystonic reactions, akathisia, and sedation.58 Haloperidol was favored over clomipramine in the treatment of individuals with autism, aged 10 to 36 years, in the treatment of hyperactivity, irritability, and global symptom severity.18 However, haloperidol has been less effective than the atypical antipsychotic risperidone in the short- and longterm treatment of behavioral symptoms, impulsivity, and impaired language skills and social relations.

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