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 ...

‌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 ...

When John Davidson was 10 years old, he experienced his first symptoms of Tourette syndrome - small facial tics and eye blinking. By the time he was 13, the neurological condition was causing ...