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.

Muscle cramps are sudden, involuntary contractions that can cause sharp, intense pain lasting from a few seconds to several ...

Clonus reflex is a set of rhythmic, involuntary muscle movements. It is a neurological condition that affects the nerve cells that control muscle movements. Damage to the nerves, as in clonus, causes ...

Muscle cramps are a common condition experienced during endurance exercise and many sports. Known as exercise-associated muscle cramps, these sustained and painful muscle contractions tend to occur ...

Low levels of magnesium, potassium, or Vitamin B12 are linked to muscle spasms, which may play a role in the occurrence of ...

Poor sleep, difficulty moving and injuries from hitting something accidentally are just some of the challenges faced by suffers of often-painful involuntary muscle spasms. However, a new study ...

If painful leg cramps have woken you up in the middle of the night, the condition can be both scary and confusing. You may think it’s due to the position you’re sleeping in — but there’s more to know ...

Last night I was working installing Vista on my laptop when I experienced something that freaked the shit out of me. I was standing up when my got tunnel vision, my perception of color was gone, and ...

Most of us have experienced the random eyelid twitch from time to time, but probably haven't given much thought to what's ...

Blepharospasm describes a condition where a person experiences an involuntary spasm of the muscles surrounding the eyelid. “Blepharo” refers to the eyelids, while “spasm” describes twitching of the ...