Uh... wtf is with those doctors?

Psychosis in borderline personality disorder: How assessment and treatment differs from a psychotic disorder | Current Psychiatry

I didn't know this, but I guess it's technically possible to have psychosis with borderline, but honestly... if he had multiple bipolar 1 diagnoses, I'd personally question the new "borderline" diagnosis. But that's just me.

I'm with Jennifer and 99fairies that it sounds more like bipolar to me if he had that kind of reaction. But like them, I am not a dr.

Sorry your son is going through this. If you're really conflicted about opinions and not sure what to do, then I agree with miguel'smom that you should try getting another opinion.