I’ve experienced occasional sleep paralysis, but never hallucinated, or had visions of demons. and it wasn’t really terrifying, well maybe the first time when I was still young but I learned about it and it was kind of cool.
I’ve had sleep paralysis a few times, as well. A couple of times I saw a figure in a white robe sitting at the foot of my bed, as if we were having a conversation. I wasn’t afraid but I was definitely unable to move. It felt like it lasted two or three minutes and then I fell asleep, I think. But I’ve had that same scenario happen twice and I definitely thought I was awake. Kinda weird.
Me too, had it quite often as a kid but not for several years. Never saw any demons or any other beings. I was always worried I would see a demon though. Full body paralysis is not a pleasant feeling, but the way out of it is to relax and not panic. It took a while to learn that.