It would come and go. I would go to the dentist. Two of them in fact. This was over a period of two years. The x-rays revealed nothing. Maybe a hidden crack in a tooth. They decided to remove a back tooth, which had a semi-problematic root canal. The pain returned.
It was like an electric shock. Movement of my jaw would trigger it. It was on the left side. Then I noticed one day, while rubbing my eye, that also triggered that same pain. I thought I had a swollen infected maxillary sinus. I took garlic, oil of oregano, known anti-bacterial/anti-fungal remedies to no avail.
As I read more about the maxillary sinus I read about trigeminal neuralgia, pain emanating from the 5th cranial nerve. [Trigeminal Neuralgia] Drugs can be prescribed and/or decompression surgery performed for this condition.
Vitamin B12 shots and pills worked as TN treatment up into the 1950s and then drugs like Dilantin and Tegretol caused the B12 approach to be abandoned.
There is a more recent report of vitamin B12 injections working for TN. [Neurology Reviews 2009] Another study showed only 23% of patients with TN had low B12 blood levels. A problem with these blood tests is that what is considered normal range for B12 is far too low. Another is that B12 is so poorly absorbed. As little a 1.8 mcg of B12 (cyanocobalamin) is absorbed from a 500 mcg dose [Journal of Pain & Relief 2012] . I was taking 1000 microgram of Methylcobalamin a day for a long time.
I then read that mega-doses of vitamin C and/or copper exacerbate a B12 deficiency. I have been taking 1000 mg of vitamin C 3 times a day for cardiovascular reasons.
I began to swallow down five 1000 mcg. B12 tablets a day. The shooting pains lessened. Then I took B12 methylcobalamin with intrinsic factor, which is necessary for absorption of this vitamin. [Medline Plus] The pain subsided demonstrably.
The issue here is that dentists, who are fully trained to recognize TN, didn’t. It is common for people with TN to first visit their dentist, mistakenly believing the pain emanates from the teeth. It is sometimes difficult to distinguish tooth pain from trigeminal nerve pain. The injection of numbing medications during dental visits relieves the pain temporarily. [Ronald Brisman MD] I would suggest a large dose of B12 (5000 micrograms) + intrinsic factor for this condition.