title: Clinical variables associated with psychosis in Alzheimer's disease.
abstract: OBJECTIVE
  The authors explored whether personal or family history of major mental illness, negative symptoms, or behavioral measures are associated with positive psychotic symptoms in Alzheimer's disease.
  
  
  METHODS
  Fifty-seven patients with Alzheimer's disease were studied prospectively during interviews with the patients and their primary caregivers.
  
  
  RESULTS
  Psychotic patients with Alzheimer's disease did not differ in cognitive functioning from nonpsychotic patients with Alzheimer's disease. No association was found between personal or family history of mental illness and psychosis. Asociality was the only negative symptom associated with psychosis. Psychotic patients had more behavioral disturbances.
  
  
  CONCLUSIONS
  Positive psychotic symptoms in Alzheimer's disease are not associated with certain aspects of cerebral functioning but are associated with behavioral disturbances.
authors.affiliation: Department of Psychiatry and Behavioral Sciences, University of Texas at Houston Health Science Center, USA.
authors.forename: K J
authors.initials: KJ
authors.lastname: Kotrla
authors.forename: R C
authors.initials: RC
authors.lastname: Chacko
authors.forename: R G
authors.initials: RG
authors.lastname: Harper
authors.forename: R
authors.initials: R
authors.lastname: Doody
mesh_terms: D000368:Aged; D000544:Alzheimer Disease / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D017028:Caregivers / Q000523:psychology; D015897:Comorbidity; D003702:Delusions / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D005190:Family; D005260:Female; D006212:Hallucinations / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D006801:Humans; D008297:Male; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology