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

Add Yahoo as a preferred source to see more of our stories on Google. Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary ...

Twitching leg muscles aren't uncommon after a long walk or exercise session. Although muscle twitches may cause you to worry about the health of your leg muscles, in most cases, twitching doesn't ...

It tends to happen when you’re just about to drift off where your legs or your body will suddenly twitch or jump. It might momentarily disturb your sleep but it usually doesn’t affect your ability to ...

You’re sitting at your computer when it starts — that annoying flutter in your eyelid that feels like a tiny butterfly trapped under your skin. Most of the time, eye twitching is harmless and goes ...

Eye twitching is usually harmless and triggered by stress, fatigue, screen strain, caffeine, or dry eyes. Here are some ...

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 ...