Gah, that sounds terrifying! I'll stick with II, thank you very much.

OP, I have very rapid mood changes like you do and my diagnosis was depression and generalized anxiety for a long time. My pdoc made me officially Bipolar when I started having longer manic periods.

So, moral of the story, talk to a pdoc. If you don't have one, get one. If you don't like the one you have, get a new one. They're the best qualified to figure out what's really going on- MI is not very black and white- and mix you up the right med cocktail.

Take Care of yourself.
-Bee