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, ...

‌Hemifacial spasm is a disorder of the nerves and muscles that causes nonpainful involuntary twitching on one side of the face. Many people refer to hemifacial spasms as lip muscle spasms. Hemifacial ...