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Definition of Dystonia musculorum deformans (DMD)

Dystonia musculorum deformans (DMD): Also called torsion dystonia, this is a fortunately rare, generalized dystonia (a state of abnormal -- either excessive of inadequate -- muscle tone) that can be inherited, usually begins in childhood, and becomes progressively worse. It can leave individuals seriously disabled and confined to a wheelchair.

Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/14/2012

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