When I was on Paxil I had really bad night terrors and that would make it hard to sleep. Because of these night terrors they switched my to Zoloft which only gave me worse night terrors. During my time taking Zoloft I was hyperactive because it was causing mania (which I later found out because it put me in a hospital), which caused the paranoid feeling and hallucinations.

I swore that there was someone in the house and I could not only hear them downstairs, but I could see them on the landing outside of our bedroom door and see them in the vanity area. I was so creeped out by this that I stopped sleeping all together.

So maybe looking at his meds might help. I know night terrors are side effects of Paxil and Zoloft and sometimes Seroquel but so far I haven't had them yet with it. Hope this helps.