Researchers in London review the literature on attention deficit hyperactivity disorder (ADHD) and bipolar disorder (BD), finding that “comorbidity and family studies appear to show that the two disorders occur together and aggregate in families at higher than expected rates. Furthermore close inspection of results from population studies reveals heightened co-occurrence of ADHD and BD even in the context of high comorbidity commonly noted in psychopathology. These results point towards a meaningful association between ADHD and BD, going beyond symptomatic similarities.” The study was released online by the Journal of Affective Disorders on May 24, 2012.
Skirrow, C. Hosang, G. Farmer, A. Asherson, P; “An update on the debated association between ADHD and bipolar disorder across the lifespan” Journal of Affective Disorders, Online May 24, 2012