Pharmacologic management of autism spectrum disorder: A review of 7 studies

Abstract

Autism spectrum disorder (ASD) is characterized by persistent deficits in social communication and social interaction, including deficits in social reciprocity, nonverbal communicative behaviors used for social interaction, and skills in developing, maintaining, and understanding relationships.1 In addition, the diagnosis of ASD requires the presence of restricted, repetitive patterns of behavior, interests, or activities. Initially, ASD was considered a rare condition. In recent years, the reported prevalence has increased substantially. The most recent estimated prevalence is 1 in 68 children at age 8, with a male-to-female ratio of 4 to 1.2 Behavioral interventions are considered to be the most effective treatment for the core symptoms of ASD. Pharmacologic interventions are used primarily to treat associated or comorbid symptoms rather than the core symptoms. Aggression, self-injurious behavior, and irritability are common targets of pharmacotherapy in patients with ASD. Studies have provided support for the use of antipsychotic agents to treat irritability and associated aggressive behaviors in patients with autism,3 but because these agents have significant adverse effects—including extrapyramidal side effects, somnolence, and weight gain—their use requires a careful risk/benefit assessment. Stimulants have also been shown to be effective in treating comorbid attention-deficit/hyperactivity symptoms. The use of selective serotonin reuptake inhibitors (SSRIs) to manage repetitive behaviors and anxiety is also common. Here, we review 7 recent studies of the pharmacologic management of ASD (Table,4-10 page 34). These studies examined the role of SSRIs (sertraline, fluoxetine), an acetylcholinesterase inhibitor (donepezil), atypical antipsychotics (risperidone, aripiprazole, lurasidone), natural supplements (vitamin D, omega-3), a diuretic (bumetanide), and a glutamatergic modulator (riluzole) in the treatment of ASD symptoms.