Has anything been mentioned about Trigeminal Neuralgia? This sounds like it might be what you may have. Try looking up "Trigeminal nerve" above where it says "medical dictionary" at the top of this page. It will tell you more about the nerve and where it is located.
Also, try "Googling" Trigeminal Neuralgia and there are several listings for it. There is even a message board, I believe it's called "Healing Well" -- there were quite a few postings there about Facial Pain.
Evidently here, we don't have too many people suffering from it. God bless and please take care. Hugs, Lee