dystonia musculorum deformans
(mŭs′kyə-lôr′əm dē-fôr′mənz)- A disease, especially of children, characterized by muscular contractions that produce distortions of the spine and hips with the muscles being spastic when in action and without tension when at rest.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.