I've been to a neurologist a few times. Honestly I can say that he prominently believed it was migraine headaches that were causing this. I took treatments and everything and no success. Since there is nothing in medical literature about POIS they will probably diagnose you as post-coital migraines, which is effectively not POIS. So in essence, the neurologist didn't help me, my own medication (niacin and olive leaf extract) worked way better than what was prescribed by the neurologist. Saying that, that doesn't mean that you shouldn't go, as I really don't know your symptoms. But if you have POIS like I do, I doubt it will help.