Subtle twitching in any part of the body is a very strange sensation and especially so when it's your lips that are twitching. While it’s usually harmless, a twitching lip can be very annoying. Often, ...

Lip twitching happens when your upper or bottom lip shakes, trembles, or quivers uncontrollably. It may be caused by something as simple as drinking too much caffeine or being low in potassium, but, ...

Someone with a twitching lip will experience quick and involuntary movements or trembling sensations that usually occur in the lower or upper lip separately. It can result from a high caffeine intake, ...

Lip twitching can be caused by successive caffeine intake or other causes that resolve on their own, as a side effect of certain medications, or from serious underlying causes like ALS. See a medical ...