You're relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it's a muscle in your arm, your leg, or ...

OAKLAND, CA - MAY 26: Derek Jeter #2 of the New York Yankees hits a single that scored Eric Chavez #12 in the third inning against the Oakland Athletics at O.co Coliseum on May 26, 2012 in Oakland, ...

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.

Most people have likely had the unpleasant experience of a muscle cramp, also known as a charley horse or muscle spasm. And while most cramps will quickly go away on their own, there are a few helpful ...

A muscle spasm — also known as a charley horse, muscle cramp or twitch — is a sudden, involuntary movement in one or more muscles. Common causes include stress, exercise, or dehydration, but nerve ...

Carpopedal spasms are frequent and involuntary muscle contractions in the hands and feet. In some cases, the wrists and ankles are affected. Carpopedal spasms are associated with cramping and tingling ...

Your rhomboid muscles connect your shoulder blade (scapula) to your spine. If your rhomboid muscles hurt, you’ll feel it in your back and shoulders. “The rhomboids can become painful because of ...

Dehydration may be one cause of muscle cramps, and some evidence suggests that electrolyte imbalances also contribute to them. Muscle cramps are painful, involuntary contractions of the muscles that ...

‌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 ...

We've all been there before. Running along the basketball court or swimming across the pool, when, all of a sudden, we experience a sharp pain in our foot or leg. Muscle cramps are common, affect ...