Well my chin actually became a bit sensitive and slightly painful due to the twitching but I wasn't complaining about pain as the twich stopped, every now and then it give a few twitches to remind me that it was there but only in a blue moon ! My tongue is more or less constant, I just generally have to move my tongue to trigger it mostly...The neuro done all the usual clinical tests ... Coordination, reflexes, eyes, muscle tone everything I guess except emg ...He said I don't need it it but if it made me relax more i could have an emg so I am getting one soon.. Just waiting on the date...