title: Cycloid psychosis, catatonia, and periodic catatonia.
authors.forename: Joseph W Y
authors.initials: JW
authors.lastname: Lee
mesh_terms: D002389:Catatonia / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D003937:Diagnosis, Differential; D006801:Humans; D038801:International Classification of Diseases; D009069:Movement Disorders / Q000453:epidemiology; D010507:Periodicity; D011618:Psychotic Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D012008:Recurrence