title: Outcome of acute and transient psychotic disorder in an index episode: A study from a tertiary care centre in North India.
abstract: BACKGROUND
  Acute and Transient Psychotic Disorder (ATPD) is a psychotic disorder of brief duration with acute onset and uncertain diagnostic stability.
  
  
  OBJECTIVE
  To study the diagnostic stability of ATPD during the index episode.
  
  
  METHODS
  140 patients diagnosed with ATPD as per ICD-10, attending a tertiary care hospital in North India were evaluated at follow ups.
  
  
  RESULTS
  Other acute and transient psychotic disorder (ICD10: F23.8) was the most common (69.3%) subtype of ATPD. In 14.28% patients, there was a past episode of ATPD. In our study, 66.3% patient's episodes resolved as ATPD, 32.7% patients converted into either a mood disorder or schizophrenia spectrum disorders.
  
  
  CONCLUSIONS
  The diagnostic stability of ATPD during the index episode was 66.3% during three months follow up period. Nearly two third of patients with ATPD evolve to either, schizophrenia or mood disorders during the index episode.
authors.affiliation: Department Of Psychiatry, King George's Medical University, Lucknow, U.P, India. Electronic address: drsujita@gmail.com.
authors.forename: Sujita Kumar
authors.initials: SK
authors.lastname: Kar
authors.affiliation: Department Of Psychiatry, National Institute Of Mental Health And Neurosciences, Bangalore, Karnataka, India. Electronic address: saranya296@gmail.com.
authors.forename: Saranya
authors.initials: S
authors.lastname: Dhanasekaran
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D018450:Disease Progression; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007194:India / Q000453:epidemiology; D008297:Male; D017063:Outcome Assessment, Health Care; D011618:Psychotic Disorders / Q000175:diagnosis / Q000453:epidemiology / Q000628:therapy; D062606:Tertiary Care Centers; D055815:Young Adult
keywords: Acute transient psychotic disorder; Diagnostic stability; Outcome