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.

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 ...