asked a doc,,why most get it on right side of face,,he said i dont know,,,and i thought,,ide be just as well to ask a passer by on the street,,i found a way to get rid of tn,,,and may be the cause,,,as an engineer, the model i have drawn here ,makes perfect sense,,backed by results,,,tn gone,,,,ammonia is the nerve exciter,,the irritating agent,,,try the diet ,,what you got to lose,,and in the end,,,i am pain free,symptom free,,and that all that matters,,in the end