title: [The association of fibromyalgia and systemic lupus erythematosus change the presentation and severity of both diseases?].
abstract: BACKGROUND
  The association of fibromyalgia (FM) and systemic lupus erythematosus (SLE) have been investigated, with conflicting results regarding the impact of a condition on the other.
  
  
  OBJECTIVE
  To determine the frequency of FM in a sample of patients with SLE treated at the Hospital Complex of Sorocaba (CHS) and the impact of FM in SLE activity and quality of life, as well as of SLE in FM.
  
  
  METHODS
  Descriptive and correlational study. Patients who met the American College of Rheumatology (ACR) criteria for SLE and/or FM were included. The total sample was divided into three groups: FM/SLE (patients with association of SLE and FM), SLE (SLE patients only) and FM (FM patients only). The following variables were used: Fibromyalgia Impact Questionnaire (FIQ), activity index of SLE (SLEDAI), Indices of Diagnostic Criteria for Fibromyalgia 2010 (SSI end GPI) and SF-36.
  
  
  RESULTS
  The prevalence of patients with FM among SLE patients was 12%. FIQ showed no difference between groups, indicating that SLE did not affect the impact caused by FM alone. The presence of FM in SLE patients did not influence the clinical activity of this disease. A strong impact of FM on the quality of life in patients with SLE was observed; the opposite was not observed.
  
  
  CONCLUSIONS
  The prevalence of FM observed in SLE patients is 12%. The presence of FM adversely affects the quality of life of patients with SLE.
authors.affiliation: Conjunto Hospitalar de Sorocaba e Pontifícia Universidade Católica de São Paulo (PUC-SP), Sorocaba, SP, Brasil.
authors.forename: Ana Luiza P Kasemodel
authors.initials: AL
authors.lastname: de Araújo
authors.affiliation: Conjunto Hospitalar de Sorocaba e Pontifícia Universidade Católica de São Paulo (PUC-SP), Sorocaba, SP, Brasil.
authors.forename: Isabella Cristina
authors.initials: IC
authors.lastname: Paliares
authors.affiliation: Conjunto Hospitalar de Sorocaba e Pontifícia Universidade Católica de São Paulo (PUC-SP), Sorocaba, SP, Brasil.
authors.forename: Maria Izabel P Kasemodel
authors.initials: MI
authors.lastname: de Araújo
authors.affiliation: Conjunto Hospitalar de Sorocaba e Pontifícia Universidade Católica de São Paulo (PUC-SP), Sorocaba, SP, Brasil.
authors.forename: Neil Ferreira
authors.initials: NF
authors.lastname: Novo
authors.affiliation: Conjunto Hospitalar de Sorocaba e Pontifícia Universidade Católica de São Paulo (PUC-SP), Sorocaba, SP, Brasil.
authors.forename: Ricardo Augusto M
authors.initials: RA
authors.lastname: Cadaval
authors.affiliation: Conjunto Hospitalar de Sorocaba e Pontifícia Universidade Católica de São Paulo (PUC-SP), Sorocaba, SP, Brasil. Electronic address: jemartinez@pucsp.br.
authors.forename: José Eduardo
authors.initials: JE
authors.lastname: Martinez
mesh_terms: D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D005356:Fibromyalgia / Q000150:complications* / Q000175:diagnosis*; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000150:complications* / Q000175:diagnosis*; D011788:Quality of Life; D057566:Self Report; D012720:Severity of Illness Index
keywords: Association; Associação; Atividade clínica; Clinical activity; Fibromialgia; Fibromyalgia; Lúpus eritematoso sistêmico; Qualidade de vida; Quality of life; Systemic lupus erythematosus