I used to overreact to things when I was younger, though it often was due, more often than not, to my alcoholism of the time. With friends I was generally a nice and fun drunk, with my husband of the time, not so much at times.

I do not think overreacting is part and parcel of Bipolar Disorder. As we know it is an episodic disorder, so almost daily, persistent behaviors tend to not be due to this.

However, I think the good news is that, precisely because of this, therapy may be the best way to go, and that doesn't have the side effects of still more BP drugs, which is where one might go in thinking this is BP-related.