gad bipolar
prior to the 1990s the focus was mostly on the link between anxiety disorders and unipolar depression, while substance-use disorders (suds) were the focus of research on comorbidity in bipolar disorder (bd). the principal objective of this review was to provide an overview of the current trends in research on comorbidity of bipolar and anxiety disorders. all articles that provided information on prevalence, clinical features, aetiology, and treatment of anxiety disorder comorbidity in bd were chosen initially. some of the highest rates of anxiety disorder comorbidity in bd have been reported in epidemiological surveys. though some reviews have reported low rates of bd in primary anxiety disorders[18,40], the majority of reviews and studies have found that the prevalence of bd in anxiety disorders is equivalent to the rates of anxiety disorders in patients with bd[7,8,66,80,128]. on the other hand, there was some preliminary evidence of cross-national and ethnic differences in the prevalence of anxiety disorder comorbidity in bd.