That sound exactly like the kind of pain I had back in the early 90's I think. I didn't know whether to see a dentist, Eye-ear-nose and throat specialist, psychiatrist, family doc or who. So I did what I always do, procrastinate!!!! So when I finally saw my family doc he said it was the trigeminal neuralgia. About 5 years later when I had my first big neuro event that diagnosed my MS my neuro said that was the first sign. As some one else said you don't have to have MS to have trigeminal neuralgia. With medicine I rarely have any problems with it and if I do it is very mild. Good luck