torsion dystonia

torsion dystonia.

See dystonia musculorum deformans.

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torsion dystonia

Neurology An AD, possibly also AR condition most common in Jews, onset age 5 to 16 Clinical Gait defects, involuntary contractions and distortion of spine, hands, feet, hips, and eventually neck; lesions typically start in one body region, usually in an arm or leg, and spread to the rest of the body in ±5 yrs; most Pts are wheelchair bound by adulthood; muscles are hypertonic, under voluntary control, hypotonic at rest; IQ unaffected