Psychotic phenomena in 257 young children and adolescents with bipolar I disorder: delusions and hallucinations (benign and pathological).

Objectives: In contrast to studies of adult bipolar I disorder (BP-I), there is a paucity of data on psychotic phenomena in child BP-I. Therefore, the aim of this work was to describe delusions and hallucinations in pediatric BP-I.

Methods: Subjects were 257 participants, aged 6-16, in either of two large, ongoing, NIMH-funded studies, 'Phenomenology and Course of Pediatric Bipolar Disorders' or 'Treatment of Early Age Mania (TEAM)'.