What causes your tongue to twitch uncontrollably when you stick it out?
1. Introduction and Direct Answer Uncontrollable tongue twitching when sticking it out, medically termed tongue fasciculation, is caused by the spontaneous, involuntary firing of the motor neurons that innervate the lingual muscles. While this visible rippling or worm-like movement can sometimes indicate a serious neuromuscular disorder such as amyotrophic lateral sclerosis, it is most frequently … Read more