It's tough because there are so many overlapping similarities between BPD and bipolar. Borderline has mood swings but not necessarily psychosis (hallucinations, etc.) I think most docs are hesitant to tell the patient that they have a personality disorder, esp if it's narcissistic or anti-social.

So if yours told you, he/she must think your BPD has traits that better explain some of your problems. However, there are types of bipolar that do have mania or psychosis at either end of the spectrum as well as high anxiety from lack of sleep.

My dx's are Bipolar, PTSD, and anxiety. I have had hallucinations (verbal and visual) during extreme depression and lack of sleep, but those went away after the triggering event of the hospital trip faded from the forefront of my memory (2-3 months later).

Just some thoughts.