Early Onset Primary Dystonia

**Semantic type:** Disease or Syndrome

**Definition:** A genetic disorder that usually presents in early childhood and is characterized by muscle contractions in a foot, leg, or arm that gradually spreads to other body regions.

**Synonyms:** - Early Onset Torsion Dystonia - Early Onset Torsion Dystonia - Oppenheim's Dystonia - Oppenheim's Dystonia