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, ...

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 ...

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.

Dr.Steven Ludwig answers the question: 'Muscle Spasms -- Causes And Treatment?' — -- Question: What Causes Muscle Spasms And What Is The Best Way To Treat Muscle Spasms? Answer: Muscle spasm ...

Many of us have felt a muscle in some part of our body suddenly and involuntarily tighten, causing a twitch or even severe cramp. Muscle spasms are common and typically don't signal a severe health ...

There are two classes of muscle relaxers. Antispasmodics reduce spasms by inhibiting signals in the brain, while antispastics affect the spinal cord and reduce muscle tightness and spasms. While ...

We've all been there before. Running along the basketball court or swimming across the pool, when, all of a sudden, we experience a sharp pain in our foot or leg. Muscle cramps are common, affect ...