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 ...

Adrenaline increases the "alertness" of the nervous system, meaning it's ready to trigger muscle contraction. It also increases the amount of blood flow and changes the tension of the muscles, which, ...

Whether you call it a charley horse, a muscle spasm or a cramp, sharp muscle pains can immobilize you for a few seconds or for even 15 minutes or more. There’s nothing worse than getting a leg cramp ...

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 ...

Dear Dr. Roach: I’ve had muscle spasms and cramping in my lower legs and feet for quite some time. It almost always happens when I’m laying in bed and in the early morning hours. If I stand up and ...

At some point or another, we’ve all experienced the acute, uncomfortable pain that is muscle cramp. Whether it’s during a run or – arguably worse – when you’re trying to get some post-run rest in bed, ...

Muscle cramps are sudden, involuntary contractions that can cause sharp, intense pain lasting from a few seconds to several minutes. They often strike during exercise, dehydration, or even while ...

Statin therapy does not exacerbate muscle injury, pain or fatigue in people engaging in moderate-intensity exercise, such as walking, according to a study published today in the Journal of the ...