Hello, Shaun, and Welcome to NeuroTalk.

I read your other post this morning, and have some questions for you.

Have you been tested for B12 levels? These can fail in people who use certain drugs commonly, acid lowering drugs for the stomach and metformin for type II diabetes.
People with gluten intolerance may also have low B12 or people with failing intrinsic factor (autoimmune disease or genetic inheritance). If Clioquinol is still available where you are, this drug severely impacts B12. (this drug also called Vioform was common in Asia, for treating traveler's diarrhea).

So getting that tested may reveal a direction for you to take.
Here is my thread on B12, here at PN. Do not accept "normal" results, ask the doctor for the numbers. Get the concentration also...since some countries use different reporting concentrations.
US uses pg/ml and other countries use pmols/L. I can convert that for you if you get those results.
http://neurotalk.psychcentral.com/thread85103.html

I invite you to read and post at our PN (Peripheral Neuropathy forum). We have a subforum with lots of information and conversations at the main forum location.
Some of our members post about painful facial sensations.
The fact that you have bodily symptoms, concerns me and points to a more global cause than trigeminal neuralgia. But that is just my opinion.