There is a higher than random correlation, though, IIRC, they're not sure why. I used to get them really badly ("Oh crap. Heading to Hell for 3 days. Again..."), but they decreased over the years (TG!) to virtually non-existant. Think the last one was... 3 or 4 years ago (???) Hope to never have one again.

Do? Originally, with no med (no doc, no insurance...), ummm...crawl into a cave for 3 days and desperately want to die. Could not function. At all. Later, got a med. It did not eliminate them, but helped enough that I could basically function, like go to work, though being slow and spacey. Um... that's not helpful at all, is it?! Ok. Helpful. It's probably obvious, but be SURE to to NOT have ANY alcohol around such times. In desperation, tried this once. Huge mistake. Turns out that Hell has a Hell.