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

Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary contractions of a muscle, muscle spasms and muscle twitching aren't ...

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 ...

The muscle twitch creates short, involuntary muscle contractions, which affect tiny muscle areas that lie beneath the skin. The sensation occurs as a small movement, which people describe as a jump, ...

Q. What causes muscle twitches? They occur all over my body and drive me crazy. Can I take anything to alleviate them? A. Muscle twitching (the medical term is "fasciculation") is common and usually ...

After a grueling CrossFit workout on a hot Summer morning that involved kettlebell swings, goblet squats, and about 100 walking lunges, my lower body was toast. But what was weird was that my left ...

While sitting still at your desk or watching TV, you sense a feeling of muscular discomfort in your arm or leg. It’s not quite a charley horse, but you can see your skin pulsating involuntarily, as if ...

Tourette syndrome (TS) is a neurological disorder. Tourette syndrome causes unwanted repetitive movements or sounds called tics. TS is more common in males than females. Simple tics are sudden, brief ...

Though eyelid twitching (technically called myokymia) can feel disconcerting, the good news is that it’s typically fleeting and harmless. Nevertheless, when you’re in the throes of the mini muscle ...

Federal health officials are adding their sternest warning to a heartburn drug from Wyeth that has been linked to muscle spasms. The Food and Drug Administration said Wyeth's pill Reglan has been ...

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 ...