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.

Add Yahoo as a preferred source to see more of our stories on Google. Many of us have felt a muscle in some part of our body suddenly and involuntarily tighten, causing a twitch or even severe cramp.

Although the occasional muscle spasm is relatively normal, sometimes they can be a cause for concern. How do you know when you should seek medical attention? We spoke with several doctors who explain ...

Body twitches, tingles, and mini spasms are rarely random. They reflect how the nervous system responds to stress, fatigue, ...

People sometimes refer to neurological conditions that cause dystonia (involuntary movement) as “dystonias.” There are many types, and they can affect people of different ages and in different ways.

You're relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it's a muscle in your arm, your leg, or your foot that begins to spasm—sometimes for a few seconds, sometimes for ...

Stiff person syndrome (also known as SPS, Moersch-Woltman syndrome, and stiff man syndrome) is a very rare condition that can cause your muscles to become rigid or spasm. This is a progressive ...

Singer Céline Dion was recently diagnosed with a rare disorder that causes severe muscle spasms. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.