I've experienced paranoia, also delusions of being able to change the future for someone because I'm "there" for them at the right moment in time. I guess that's psychosis too. And of course there was the time I saw black and gray cats running under the supply carts in the ER while I was waiting to be transferred to the psych unit in the next town...but we won't talk about that right now. Someone might be listening. Seriously.