authoritarian conservatism
It actually does make sense, without being a partisan slur:
“Our study shows that psychotic patients prefer an authoritative leader,” Lohse says. “If your world is very mixed up, there’s something very comforting about someone telling you, ‘This is how it’s going to be.’”
The impulse to AC lurks in all humans, and stress and fear bring it out. When it rears its ugly head, it looks around for certainty, and finds it in an ideology that's nothing but certainty. "Stay the course" is music to the ears of somebody who's been terrorized, from within or without.
I wouldn't say that RightWing rhetoric makes people crazy. That would be reversing cause-and-effect. I'd say that crazy people gravitate to RightWing rhetoric. ;-)