so docs will try a number of things. Gabapentin (as mentioned below) can be useful. If meds aren't working then imaging and surgeries can help. I've seen a number of cases in my career and that seems to be the protocol ....try meds.....imaging....surgery.
UVa recommended below. Wake Forest supposedly has one of the best in that field. My son is in Neurosurgery residency at George Washington and he says they are doing a lot of work with that.
Good luck. I recently saw a hispanic woman who literally had worn an ulcer in the side of her face from continuously rubbing the area to try to relieve the pain.