Your reaction to anti-d's is one of the criteria for a BPII diagnosis. Prior to being diagnosed my hypomanic episodes were quite subtle. When I was put on anti-d's I went into a mixed episode and 3 weeks later had to be hospitalized (I received my diagnosis in-patient).

I think it would be hard having a dual-diagnosis because it would be difficult figuring out which one was causing the issues. I also agree that changing/adding meds isn't always the answer.

Another member had posted this a while back. It's a very good article and speaks to the symptoms the two disorders share and the differences between the two. "I know there are sometimes discussions of whether someone has bipolar or something else, like borderline. I ran across this article on PsychCentral that compares the two. Here is the"link