Get all the news you need in your inbox each morning. "Muscle spasms usually occur in the calf or thigh," explains Loren Fishman, MD, a professor of physical medicine and rehabilitation at ...

A leg cramp is a sudden, uncontrolled contraction of a muscle. This can occur elsewhere in the body, but is most commonly experienced in the lower extremities. Leg cramps or spasms are unpredictable ...