When I was on Accutane, I peeled my lips (carefully!) every few hours, then smeared carmex on them. I couldn't smile unless I did this, because my mouth was like a tight ring of dry skin. Freshly peeled, puffy, bright pink Accutane lips are a beautiful thing for someone who has always had pale, thin lips: I looked like Elizabeth Hurley.
While on Accutane, regardless of my family's and my boyfriend's ostensible patience with me (sometimes it took me 45 minutes to completely peel my lips, y'see), I was angry with them on a regular basis. My disposition was blighted with rage. It was awful! I couldnt concentrate, either, and I had trouble sleeping. So I'm curious: Are you having other problems as well?