Mood and behavioral dysfunction with opsoclonus-myoclonus ataxia.

Opsoclonus-myoclonus ataxia syndrome is a paraneoplastic syndrome of cerebellar damage associated with neuroblastoma. The authors assessed psychiatric symptoms of opsoclonus-myoclonus ataxia syndrome in 17 children, who were 16 months to 12(1/2) years of age. Psychiatric symptoms examined included disruptive behavior, affective dysregulation, irritability, impulsivity, cognitive impairment, and poor attention.