I get what I call shaky jaw my lower jaw shakeS and twitches, or tremors what ever. it is from my trig nerve misfiring . I think that is diffrent then what you are describing. And do not be discouraged that you have to try another med. it is the way of the t.n. people. we must try and try until the doc finds something that helps controll it. you are not alone on that road my friend. so keep you head up and out look positive ,the ones that havent worked just puts you that much closer to getting the ones that will.
Many low pain wishes Melina .
Peace