A sudden spasmodic and purposeless movement of some muscle or muscle group, particularly of the face, usually occurring under emotional stress. Possibly organic or psychogenic in origin.
Definition reprinted with permission from Hood, Stephen B. (editor) available from Stuttering Foundation of America: Stuttering Words (Publication No 2: Speech Foundation of America)
CNS Drug: #CNSDODNotable Person: #BHCPODPhobia: #BNphobiaTerm: #BHCTOD