title: Prognosis of patients with systemic lupus erythematosus and discoid lesions.
abstract: BACKGROUND
  It has been observed that patients with systemic lupus erythematosus and discoid lesions have a milder systemic disease.
  
  
  OBJECTIVE
  To compare the clinical, demographic and autoantibody profile of systemic lupus erythematosus patients with and without discoid lesions.
  
  
  METHODS
  We carried out a retrospective study involving 288 systemic lupus erythematosus patients who met at least four classification criteria of the American College of Rheumatology for systemic lupus erythematosus, comparing the clinical, serological and demographic factors between patients with and without discoid manifestations.
  
  
  RESULTS
  Of the 288 patients, 13.8% had discoid lesions. Univariate analysis found no differences in the prevalence of malar rash, photosensitivity, arthritis, serositis, leukopenia, lymphopenia and hemolytic anemia or anemia of the central nervous system (p = ns). Renal lesions were more common in those without discoid lesions (p =0.016), and hemolysis (p<0.0001) was more common in those with discoid lesions. Regarding the profile of autoantibodies, only the anti-RNP antibody was more common in those with discoid events (p =0.04). In a logistic regression study, only the renal lesions and anti-RNP maintained their associations with discoid manifestations.
  
  
  CONCLUSIONS
  Patients with lesions of systemic lupus erythematosus and discoid lesions have lower prevalence of renal involvement and a greater presence of anti RNP.
authors.affiliation: Faculdade Evangélica do Paraná, CuritibaPR, Brazil.
authors.forename: Thelma Larocca
authors.initials: TL
authors.lastname: Skare
authors.forename: Bárbara
authors.initials: B
authors.lastname: Stadler
authors.forename: Emilio
authors.initials: E
authors.lastname: Weingraber
authors.forename: Diogo F
authors.initials: DF
authors.lastname: De Paula
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001323:Autoantibodies / Q000097:blood; D005260:Female; D006801:Humans; D016015:Logistic Models; D008179:Lupus Erythematosus, Discoid / Q000175:diagnosis* / Q000276:immunology; D008180:Lupus Erythematosus, Systemic / Q000175:diagnosis* / Q000276:immunology; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012189:Retrospective Studies; D012307:Risk Factors; D055815:Young Adult
chemical_list: D001323:Autoantibodies