Night terrors.
They’re not dreams and they’re not nightmares – night terrors are what you end up with when you get a nightmare and you’re not in stage 4 delta sleep. If you were, then your mind would be prepared for it, and it would simply be a nightmare. But it’s not.
I didn’t want to wake up today. Today, according to the terrors I’ve been having recently, is the day I die. I have a stroke. There isn’t anything you or I can do to stop it, there isn’t anything you or I could have done to prevent it.
It is irrational, to say the least. But I can’t stop thinking that today — today is the day that I die.