 There is a scarcity of clinical trials assessing the effects of medications in children with bipolar disorder. This study aims to assess the efficacy of Aripiprazole a novel anti-psychotic drug for the treatment of children and adolescents with bipolar disorder comorbid with ADHD. The study design is a 8-week randomized, double blind, parallel group trial. Patients were randomized to either aripiprazole or placebo. 