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muscle spasm

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Published on Jul 4, 2011

In medicine a spasm is a sudden, involuntary contraction of a muscle, a group of muscles,[1] or a hollow organ, or a similarly sudden contraction of an orifice. It is sometimes accompanied by a sudden burst of pain, but is usually harmless and ceases after a few minutes. Spasmodic muscle contraction may also be due to a large number of medical conditions, including the dystonias.

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