Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Dystonia musculorum deformans (DMD)
Medically reviewed by Min Clinic Staff | Updated: January 2026
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.