Before you think I’m defending the borderline, let me state uncategorically that I avoid them like the plague in real life. Here’s a good article that explains why borderline personality disorder is often misdiagnosed as bipolar disorder. http://www.nimh.nih.gov/publicat/bpd.cfm While a person with depression or bipolar disorder typically endures the same mood for weeks, a person with BPD may experience intense bouts of anger, depression, and anxiety that may last only hours, or at most a day. These may be associated with episodes of impulsive aggression, self-injury, and drug or alcohol abuse. Distortions in cognition and sense of self can lead to frequent changes in long-term goals, career plans, jobs, friendships, gender identity, and values. Sometimes people with BPD view themselves as fundamentally bad, or unworthy. They may feel unfairly misunderstood or mistreated, bored, empty, and have little idea who they are. Such symptoms are most acute when people with BPD feel ...