By Renée Grinnell

Chorea, or Chorea Sancti Viti (Latin for “St. Vitus’ dance”) is an involuntary movement disorder characterized by abrupt, purposeless, patternless involuntary movements. Causes include Huntington’s disease and drug side effects.

Example: The patient presents a series of abnormal movements which are quick and unpredictable, involving many muscle groups.

    Last reviewed: By John M. Grohol, Psy.D. on 7 Oct 2008


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