I suffered from that for about 6 weeks one year. A friend booked me in to see her massage therapist who also has an MD in acupuncture. I kid you not, 10 minutes after she put the needles in, the pain went away and has not returned (it has been 10 years). If you have access to an acupuncturist, it might be worth a try. Nothing else I did worked. Since it is nerve pain, acupuncture might be the answer.
I'll check into that. It's driving me nuts!