Slideshows Images Quizzes

Copyright © 2018 by RxList Inc. RxList does not provide medical advice, diagnosis or treatment. See additional information.

Muscle Cramps: Symptoms & Signs

  • Medical Author: Melissa Conrad Stöppler, MD

A muscle cramp is an involuntary contraction of a muscle without relaxation afterward. Normal movement involves alternation of contraction and relaxation of the muscles of the body. Muscles that stabilize the body, like those of the head, trunk, and neck, work similarly. When a muscle contracts involuntarily, it is referred to as a spasm; a forceful and prolonged spasm becomes a cramp.

Symptoms of a muscle cramp include local pain at the site of the cramp, which can be severe, and firmness or tenderness of the involved muscle. Any muscle can develop a cramp, but the most common sites for muscle cramps are in the legs. The most commonly involved muscle groups are the back of the lower leg/calf, the back of the thigh (hamstrings), and the front of the thigh (quadriceps).

Related Symptoms & Signs

REFERENCE:

Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.

Medically Reviewed by a Doctor on 3/28/2017

Health Solutions From Our Sponsors