Hey-Wellllllllll. Let me expand on that comment. Here is the thing. I have them 24/7 in several muscles. When I flex they do NOT stop. They keep going and you can see them. I have read that this is worse...etc. BOTH of my neurologists said to me "it does not matter where, how or what type of twitches you have" they are benign. Directly from both of them they said "weakeness is the hallmark" of MND. If you have been twitching over a month and have NO other symptoms (I dont mean perceived weakness, burning, cramps) but I mean WEAKNESS then you are FINE. Both of them reassured me that after a few months of twitching and several negative EMG's they just did them for MY piece of mind. So no "type" of titch is more worrying. I have the bag of worms in my foot and the thumpers all over. Both the neuros saw them and were NOT concerned after my clinical and EMG. So dont worry about what you read, its the neuro that needs to tell you if its good or not. Sean B.