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Charley Horse; Cramps; Muscle cramp 

 

Involuntary, painful shortening of muscles. Usually, a knotting of the muscles is visible.

A cramp is an unpleasant sensation caused by contraction, usually of a muscle. It can be caused by cold or overexertion. Illness or poisoning can also cause cramps, particularly in the stomach, which is referred to as colic if it fits particular characteristics.


Muscle Cramps as related to Cramp