Indeed the strongest case to bind BPD to personality disorder rather then mood disorder is the fact that BPD mood swings are always present and can happen any second making it a very large part of the personality. Even playing the devil's advocate for this thread it would be very difficult to dispute that fact. All I can say is that those that would dispute it would attempt to argue the duration is not as important as we make it out to be. And once again we avoid recognizing an actual mood disorder and not a personality disorder.

It is significant we all stop and pause here because this is a important point that cboxpalace is trying to pound at us. In all fairness to everyone, this is the strongest arguement in favor of classifying Borderline as a personality disorder. But as strong as this point is, it does not end the debate, or has not so far in the field