Muscle twitches fall into two main types. There’s myoclonus, where a whole muscle or group of muscles twitch or spasm. Then ...

Add Yahoo as a preferred source to see more of our stories on Google. A muscle spasm, also known as a cramp, twitch or charley horse, is the sudden and involuntary forced contraction of a muscle.

Geisinger neurologists now use Botox to reduce spasms and ease pain associated with involuntary muscle movement problems. About 300,000 people in the U.S. suffer from some form of dystonia, a movement ...

Clonus is an abnormal reflex response that produces involuntary, repetitive, and rhythmic muscle contractions when a muscle is stretched. This abnormal reflex is typically a sign of an upper motor ...

At one point or another, we’ve all experienced the unexpected, intense pain of a muscle cramp. Muscle cramps, also known as muscle spasms or charley horses, are the involuntary contraction of muscle ...