any of several diseases of the nervous system characterized by jerky, involuntary movements, chiefly of the face and extremities.
2.
Also called St. Vitus's dance.such a disease occurring chiefly in children and associated with rheumatic fever.
3.
Veterinary Pathology. a disease of the central nervous system caused by bacterial or organic degeneration, most common in dogs following canine distemper, characterized by irregular, jerky, involuntary muscular movements.
Origin: 1680–90; < Greek choreía a dance, equivalent to chor(ós) chorus + -eia-y3
1806, from Mod.L. chorea Sancti Viti "St. Vitus dance" (originally a mass hysteria in 15c. Europe characterized by uncontrolled dancing; extension to the nerve disorder is from 1621), from L. chorea, from Gk. khoreia "dance."