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 ...

Muscle twitching is often caused by stress or a lack of sleep and is usually not serious. If muscle twitching occurs with muscle weakness or wasting, you should see a doctor. Muscle twitches can be ...

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.

Medically reviewed by Smita Patel, DO Hypnic jerks are sudden muscle contractions that happen as you fall asleep. They are ...

Why are we asking for donations? Why are we asking for donations? This site is free thanks to our community of supporters. Voluntary donations from readers like you keep our news accessible for ...

Picture the scene: you're settling down to watch another episode of Married At First Sight Australia when all of a sudden your eye starts to twitch uncontrollably. You blink and give your eye a good ...

Cataplexy, or sudden muscle weakness that can resemble fainting, may be prompted by strong emotions. This symptom isn't serious and mostly occurs with narcolepsy type one — otherwise, it's very rare.

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 ...