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A muscle cramp is a strong, painful muscle contraction or tightening that comes on suddenly and lasts from a
few seconds to several minutes. Soreness in the muscle may last for hours after
the hard, tense cramp has stopped.
The cause of muscle cramps is not always known. Muscle
cramps may be brought on by many conditions or activities, such as:
Also, many medicines can cause muscle cramps.
Current as of:
May 22, 2015
William H. Blahd, Jr., MD, FACEP - Emergency Medicine & H. Michael O'Connor, MD - Emergency Medicine
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