title: Diagnostic stability in patients with first-episode psychosis.
abstract: OBJECTIVE
  To examine the short-term stability of Diagnostic and Statistical Manual of Mental Disorders (4th edn; DSM-IV) and International Classification of Diseases (10th revision; ICD-10) diagnoses in a group of patients with first-episode psychosis.
  
  
  METHODS
  Sixty patients with first-episode psychosis admitted consecutively to Roozbeh Hospital, Tehran, were sampled; their illnesses could not be attributed to any medical or substance-induced conditions. Patients were assessed at the time of discharge from the hospital, and at 3, 6 and 12 month intervals following admission. At each visit, two psychiatrists made consensus DSM-IV and ICD-10 diagnoses, based on all available information. Stability was discerned as the consistency between diagnoses at the time of discharge and at 12 month follow up.
  
  
  RESULTS
  Forty-eight patients completed follow up. Affective psychotic disorders and schizophrenia in both classification systems were highly stable. In addition, all patients with DSM-IV brief psychotic disorder and ICD-10 acute and transient psychotic disorders remained the same at follow up.
  
  
  CONCLUSIONS
  Affective psychoses and schizophrenia, in line with previous findings, remained stable. Diagnoses of brief psychoses were highly stable as well; this could reflect a non-relapsing course of acute brief psychoses, especially in developing countries.
authors.affiliation: Department of Psychiatry, and Psychiatry and Psychology Research Center, Roozbeh Hospital, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Homayoun
authors.initials: H
authors.lastname: Amini
authors.forename: Javad
authors.initials: J
authors.lastname: Alaghband-rad
authors.forename: Abbas
authors.initials: A
authors.lastname: Omid
authors.forename: Vandad
authors.initials: V
authors.lastname: Sharifi
authors.forename: Rozita
authors.initials: R
authors.lastname: Davari-Ashtiani
authors.forename: Farzad
authors.initials: F
authors.lastname: Momeni
authors.forename: Zahra
authors.initials: Z
authors.lastname: Aminipour
mesh_terms: D000293:Adolescent; D000328:Adult; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D005500:Follow-Up Studies; D006760:Hospitalization; D006778:Hospitals, Psychiatric; D006801:Humans; D038801:International Classification of Diseases; D008297:Male; D008875:Middle Aged; D011618:Psychotic Disorders / Q000175:diagnosis* / Q000523:psychology / Q000534:rehabilitation; D012720:Severity of Illness Index