title: Relationships among negative, positive, and depressive symptoms in schizophrenia and psychotic depression.
abstract: BACKGROUND
  We examined relationships among positive, negative, and depressive symptoms in schizophrenia and major depression with psychosis.
  
  
  METHODS
  Patients with schizophrenia (n = 17) and major depression and psychotic features (n = 25), with no prior psychopharmacologic treatment were assessed on scales measuring positive psychotic, negative, and depressive symptoms.
  
  
  RESULTS
  Analyses revealed the depressive symptoms positively correlated with anhedonia/asociality and avolition/apathy in both patient groups. Positive psychotic symptoms significantly correlated with depressive symptoms in the schizophrenic group.
  
  
  CONCLUSIONS
  Several specific symptoms used in defining both depressive and negative syndrome constructs appear to be shared. The relationship between positive symptoms and depression in schizophrenia and not psychotic depression suggests the severity of depression may be involved in this relationship.
authors.affiliation: Department of Psychiatry, University of Cincinnati College of Medicine, Ohio 45267-0559, USA.
authors.forename: K W
authors.initials: KW
authors.lastname: Sax
authors.forename: S M
authors.initials: SM
authors.lastname: Strakowski
authors.forename: P E
authors.initials: PE
authors.lastname: Keck
authors.forename: V H
authors.initials: VH
authors.lastname: Upadhyaya
authors.forename: S A
authors.initials: SA
authors.lastname: West
authors.forename: S L
authors.initials: SL
authors.lastname: McElroy
mesh_terms: D000293:Adolescent; D000328:Adult; D000341:Affective Disorders, Psychotic / Q000175:diagnosis* / Q000523:psychology; D003702:Delusions / Q000175:diagnosis* / Q000523:psychology; D003866:Depressive Disorder / Q000175:diagnosis* / Q000523:psychology; D003937:Diagnosis, Differential; D005260:Female; D006212:Hallucinations / Q000175:diagnosis* / Q000523:psychology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data; D011594:Psychometrics; D012559:Schizophrenia / Q000175:diagnosis*; D012565:Schizophrenic Psychology