title: [A critical study of the influence of negative symptoms on the therapeutic response in schizophrenia].
abstract: BACKGROUND
  The schizophrenia is considered an heterogeneous disorder which phenomenological differences could to point to etiopathogenic differences. Negative symptoms are associated with poor treatment response. In the last year different operative criteria of the "refractory treatment" concept has been developed. The association between negative schizophrenic symptoms and neuroleptic treatment response is studied.
  
  
  METHODS
  An open cross-sectioned design is made. 50 schizophrenics (DSM III-R criteria) inpatients are divided into 2 groups: one of 25 treatment-refractory schizophrenics (defined as Kane criteria, modified), and a second group of 25 treatments-responders schizophrenics. Negative symptoms are evaluated by the SANS into the five days before the hospital discharge.
  
  
  RESULTS
  The two groups showed differences in the number of hospital income and total length of stay (p < 0.01). There were no differences in the subscales: "alogia", "affective flattening" and "attention impairments", although differences were found in "anhedonia-asociality" and "avolition-apathy" subscales (p < 0.05).
  
  
  CONCLUSIONS
  Association between negative symptoms-poor outcome is issued. Possible relation between "anhedonia-asociality" and "avolition-apathy" added to social dimension with refractoriness to treatment is suggested.
authors.affiliation: Departamento de Psiquiatría, Universidad de Sevilla.
authors.forename: M J
authors.initials: MJ
authors.lastname: Acuña
authors.forename: J
authors.initials: J
authors.lastname: Martín
authors.forename: D
authors.initials: D
authors.lastname: Noval
authors.forename: M
authors.initials: M
authors.lastname: Blanco
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D014150:Antipsychotic Agents / Q000627:therapeutic use*; D005260:Female; D006760:Hospitalization; D006778:Hospitals, Psychiatric; D006801:Humans; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D012559:Schizophrenia / Q000175:diagnosis* / Q000188:drug therapy* / Q000534:rehabilitation; D012565:Schizophrenic Psychology
chemical_list: D014150:Antipsychotic Agents