Hemifacial spasm (HFS) is a rare movement disorder that causes involuntary muscle contractions on one side of the face. It typically starts with painless but annoying twitching around one eye. Over ...

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, ...

It has happened to many of us. While in the middle of work, a study session or just spending time with friends, your eyelid flutters for no apparent reason. At first, it may be nothing more than a ...