Thanks for the replies. It was a neursurgeon i saw and i saw him after googling for experts on TN in my local area. He is referring me to a neurologist as he says he doesn't know what the cause of the problem is, that when he initially saw me he thought i may have a brainstem lesion but this ruled out by the MRI. I don't have any eye problems. The neurologist he is referring me to has a specialist interest in headache though from what i've read this doesn't seem to fit my symptoms. I sort of am concerned that it may be a pre-TN thing, i don't have sharp pains just a numb/stinging/burning sensation which is constant.