Muscle Cramps

Symptoms & Signs Index

A muscle cramp is an involuntarily and forcibly contracted muscle that does not relax. When we use the muscles that can voluntarily be controlled, such as those of our arms and legs, they alternately contract and relax as we move our limbs. Muscles that support our head, neck, and trunk contract similarly in a synchronized fashion to maintain our posture. A muscle (or even a few fibers of a muscle) that involuntarily (without consciously willing it) contracts is called a "spasm." If the spasm is forceful and sustained, it becomes a cramp.

Main Articles on Muscle Cramps

Causes of Muscle Cramps

Other Causes of Muscle Cramps

Examples of Medications for Muscle Cramps