That's why I never took LSD either, spent to much time watching my roommate on it, pacing around the room talking to herself
The ugly part of Demerol is feeling like you are not part of what is going on and that, whatever it is, it is not going right. There is a growing conviction that something is terribly wrong with you and you will not get better. If the drug works by blocking certain parts of your brain to prevent sensation of pain, maybe in the process it also blocks some links to the reasoning centers. At least they immediately switched you to the perc and you did not have to stay on a drip with Demerol for a few days, that's when it starts getting really acute. At least I know now that it was not just an allergic reaction on my part, I've heard stories from 2 other people who experienced the same effects.