If you’re scared that you might have bulbar-onset ALS because you see your tongue twitching when you look at it in the mirror, you may be shocked at what you’re about to find out.
When something jerks briefly, the word in the English language to describe this is a twitch. People see the jerk, call it a twitch, and then think they might have ALS.
“The answer here gets a bit complicated,” says Dr. Geraci. “Because it is so difficult to really hold the tongue in a state of complete rest, one can't say if the twitches on the video are fascics or an actual motor unit contraction (the motor unit being the nerve connected to the muscle fiber).