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.

Infectious agents can cause muscle twitching and spasms, too. The most commonly known is probably tetanus, which causes a phenomenon called lockjaw, where the neck and jaw muscles contract to the ...

Céline Dion revealed she's battling a rare neurological syndrome called stiff-person syndrome, which causes uncontrollable muscle spasms and makes it difficult for her to walk and sing.

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 ...

Singer Celine Dion’s announcement Thursday that she has stiff-person syndrome will shed new light on a rare treatable, but incurable, condition. According to Dr. Duarte Machado of the Chase Family ...

Botox is known for fixing wrinkles, but for a local woman, it ensures her eyesight. Annie Giacalone, of Wilmington, has essential blepharospasm, a long name for the movement disorder that causes ...