From some of the articles I have read it seems that when a person comes off of an AP, they may experience psychosis even if they have never experienced psychosis before. As I understand it the brain attempts to return to it's previous state chemically that it was in without the AP. When the AP is removed then that compensation effect causes psychosis in someone who never had it, and a supercharged psychosis if they had problems with it before. It supposedly is temporary until the brain returns to it's previous state. I could be way off but it is just what I read.

On another note I'm on my 4th day off of an AP, and the second night I had hallucinations much more vivid than I would normally have unmedicated. I've seen some random things that were much more defined in the last few days too. I tend to think the articles I read are correct, as withdrawing from the AP I've had periods of super psychosis and some really nasty moods and sensations, along with a few lingering side effects.