... 1Institute of Behavior Sciences 'G. De Lisio', Carrara, Italy, 2Department of Psychiatry, Neurobiology, Pharmacology and Biotechnologies, Psychiatry Section, University of Pisa, Italy, 3Adults ... they have more frequent mixed symp-tomatology and suicidality, early onset panic attacks, andsignificant increases in drug abuse and in physical mor-bidity [1,17,20,34]. Moreover, history of ... comorbidity in bipolar disorderwith psychotic features. Br J Psychiatry 1999, 175:467-471.27. Strakowsky SM, Keck PE Jr, McElroy SL, Loczac HS, West SA: Chro-nology of comorbid and principal syndromes...