Childhood mania: insights into diagnostic and treatment issues.

Our study's objective was to clarify the nosologic status of children who satisfy diagnostic criteria for bipolar disorder. Using blind raters and structured psychiatric interviews as well as data from other instruments, we undertook studies from various vantage points, examining children with bipolar disorder to confirm the existence of the diagnosis in children and to clarify its clinical course and characteristics. We found that (1) bipolar disorder in children referred to our clinical center is not as rare as previously thought; (2) bipolar disorder in children commonly presents with attention-deficit hyperactivity disorder, which makes diagnosis difficult; and (3) bipolar disorder in children presents with a clinical picture considered atypical by adult standards, with irritability, chronicity, and symptoms of mania mixed with those of depression. Our data suggest that childhood bipolar disorder is more common than previously thought, but it may be difficult to diagnose because of comorbidity with attention-deficit hyperactivity disorder and a developmentally different presentation from adults.