title: Typologies of positive psychotic symptoms in methamphetamine dependence.
abstract: OBJECTIVE
  Understanding methamphetamine associated psychotic (MAP) symptom typologies could aid in identifying individuals at risk of progressing to schizophrenia and guide early intervention.
  
  
  METHODS
  Latent class analysis (LCA) of psychotic symptoms collected from 40 (n = 40) methamphetamine dependent individuals with a history of psychotic symptoms but no history of a primary psychotic disorder.
  
  
  RESULTS
  Three typologies were identified. In one, persecutory delusions dominated (Type 1), in another persecutory delusions were accompanied by hallucinations (Type 2), and in the third a high frequency of all the assessed hallucinatory and delusional symptoms was observed (Type 3).
  
  
  CONCLUSIONS
  MAP is a heterogeneous syndrome with positive symptom typologies.
  
  
  CONCLUSIONS
  This study represents the first attempt at identifying typologies of MAP and highlights the potential utility of LCA in future large-scale studies.
authors: Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia.|Department of General Practice, University of Melbourne, Parkville, VIC, Australia.|Centre for Human Psychopharmacology, Swinburne University of Technology, Hawthorne, VIC, Australia.|Florey Institute for Neuroscience and Mental Health, Parkville, VIC, Australia.
authors: Chad A
authors: CA
authors: Bousman
authors: Centre for Research on Ageing, Health and Wellbeing, Australia National University, Canberra, ACT, Australia.
authors: Rebecca
authors: R
authors: McKetin
authors: Centre for Research on Ageing, Health and Wellbeing, Australia National University, Canberra, ACT, Australia.
authors: Richard
authors: R
authors: Burns
authors: Department of Psychiatry, University of California, San Diego, San Diego, California.
authors: Steven Paul
authors: SP
authors: Woods
authors: Department of Psychiatry, University of California, San Diego, San Diego, California.
authors: Erin E
authors: EE
authors: Morgan
authors: Department of Psychiatry, University of California, San Diego, San Diego, California.|Veterans Administration San Diego Healthcare System, San Diego, California.
authors: J Hampton
authors: JH
authors: Atkinson
authors: Department of Psychiatry, University of Melbourne, Parkville, VIC, Australia.|Florey Institute for Neuroscience and Mental Health, Parkville, VIC, Australia.|NorthWestern Mental Health, Melbourne, VIC, Australia.
authors: Ian P
authors: IP
authors: Everall
authors: Department of Psychiatry, University of California, San Diego, San Diego, California.
authors: Igor
authors: I
authors: Grant
mesh_terms: D000328:Adult; D019969:Amphetamine-Related Disorders / Q000150:complications / Q000175:diagnosis* / Q000523:psychology*; D003702:Delusions / Q000150:complications* / Q000523:psychology; D005260:Female; D006212:Hallucinations / Q000150:complications* / Q000523:psychology; D006801:Humans; D008297:Male; D008694:Methamphetamine / Q000009:adverse effects*; D011605:Psychoses, Substance-Induced / Q000150:complications / Q000175:diagnosis* / Q000523:psychology; D063189:Symptom Assessment; D014739:Victoria; D055815:Young Adult
chemical_list: D008694:Methamphetamine