Relationship Between Borderline Personality Disorder And Bipolar Disorder, Long-Term Study 
Results from a long-term study indicate that borderline personality disorder (BPD) and bipolar disorder do not commonly coexist, a finding which has important implications for treatment. The findings are reported in the July 2006 issue of The American Journal of Psychiatry (AJP), the official journal of the American Psychiatric Association (APA). [click link for full article]