if doc say,tri nerve is over excited,,then one must assume some agent is causing it,,but what,,,,,if anyone can give me another naturaly accurring nuro toxin nerve exciter that can cross the blood brain barrier,,please do so,,,and if any one can say,amonia could not cause tn ,state why not,,when i was searching for a cause of tn,,i was open to everything,,the only proof i would need is ,cure,,i got it,,,,the alternative was a life time on tegretol or surgery,,,if i listen to doc,,just keep taking the drugs,,not a chance,,