the abillity to induce my tn,,,,through protiene intake is proof possitive,,for me at least,,for the cause of my tn,,and i suspect for many others to,,,but remember,,if you go to docs for amonia blood check,,remember,,some are supersensitive to tiny amounts,,and no one liver works perfectly,all the time,,,,in bilatteral tn,,is the perfect example of whole brain involvment,,not a blood vessel pressing a nerve,,many with tn,start with one side only,then progress to bilateral,,,which makes sense,if its amonia,,