(HealthDay News) -- A charley horse, or muscle spasm, can occur in any muscle in the body, but it usually occurs in the leg.
According to Duke University Medical Center, charley horses can occur when a muscle is overused or injured, and can indicate dehydration or low potassium levels.
At the first sign of a muscle spasm, you should stop your activity, and try stretching and massaging the pained area. Heat can relax the muscle at first, but ice should be used after the pain subsides. Non-steroidal anti-inflammatory medications can also help with the pain.
