The muscle twitch creates short, involuntary muscle contractions, which affect tiny muscle areas that lie beneath the skin.

Medically reviewed by Jennifer Steinhoff, MD Key Takeaways Muscle twitching is often caused by stress or a lack of sleep and ...

Tweaked by a muscle twitch? From an uncontrollable fluttering eyelid to a pulsing calf muscle, these small, rapid involuntary muscle contractions may happen at any time -- and can be annoying.

Ever sit in a chair and feel twitching in your eye? Or maybe your calf muscle. You may suffer from benign fasciculation syndrome. Dr. Jerry Fleishman of Medstar Franklin Square Medical Center talks ...

Muscle twitches, often experienced as sudden, involuntary movements in the muscles, are common yet can raise concerns for some individuals. These small, rapid contractions, medically known as ...

Do your muscles still spasm after a run? This is most likely muscle fasciculation, where the voluntary muscle units are randomly firing and not under the usual central nervous system neurologic ...

Actor Eric Dane has revealed he has been diagnosed with ALS, a progressive neurodegenerative disease that damages motor ...

The involuntary contraction of muscles that occur when your knee twitches, are usually caused by the muscles in your thigh, rather than the knee itself. The occasional twitch of your knee (or any body ...