Sorry to hear this. That's a pretty chronic case I think. I've had them for years but only 2 or 3 times a year. I don't wake up screaming but I'm pretty damned horrified...usually panting like a racehorse and drenched in sweat. Adrenaline through the roof. Without reading up on cases like your spouse's, I would be wondering if hypnotism might be an option...from a psychologist trained in that sort of thing. Sounds as though the cost might be well worth it. I do wish you find some help. How many doctors has he seen?