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 ...

From standing on your head and pressing on your eyeballs to breathing through a paper bag and chewing on a lemon, people will do just about anything to get rid of hiccups. The sudden, involuntary ...

Clonus causes involuntary, rhythmic muscle contractions when a muscle is stretched. It is often observed in conditions like multiple sclerosis, stroke, and cerebral palsy. Clonus can be diagnosed by ...