I woke up with a numb tongue 10 days ago and thought it might be an allergic reaction to the fish I had for dinner the night before. I took an antihistamine and that didnt help. I do have MS, but I havent heard of a numb tongue as a symptom, nor has it happened to me before. Could this be the cause and is there anything I can take that may make it better sooner rather than later.....as I started to type this, I started to have numb lips too but so far this all seems to be happening on the left side.