dystonia musculorum deformans
noun
dystonia mus·cu·lo·rum de·for·mans
| \ -ˌməs-kyə-ˈlȯr-əm-di-ˈfȯr-ˌmanz
\
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Medical Definition of dystonia musculorum deformans
: a rare inherited neurological disorder characterized by progressive muscular spasticity causing severe involuntary contortions especially of the trunk and limbs
— called also torsion dystonia