Lucio Bini Mood Disorder Centers, Cagliari and Rome, Italy; Department of General Psychology, University of Padua, Padua, Italy; Section of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy. Electronic address: [Email]
It has long been recognized that bipolar disorder (BD) and attention deficit-hyperactivity disorder (ADHD) co-occur in an uncertain proportion of patients, recognized commonly in juvenile years. There is growing suspicion that such co-occurrence is associated with several clinically unfavorable characteristics. Accordingly, we compared 703 type I or II BD subjects with vs. without a lifetime diagnosis of ADHD.