Undiagnosed untreated bipolar can do all those things but, bipolar doesn't have you feeling empty and bored all the time. You could have an unstable view of yourself but, ultimately you *know* you exist. All the recklessness and suicidal behavior is off and on with the moods of bipolar. Oh, and while people with bipolar might be really angry sometimes that isn't the normal behavoir. Borderline leaves you upset and annoyed, always. Personality disorders don't come and go, they're part of you're personality make up. It is hard to self diagnose because you could lack the insight you know how you usually are. When I'm depressed, I truly believe I've always been that way, so not true!

Or at least that's how it was explained to me when it was ruled out as a possible alternative diagnosis.