title: DRESS: clinicopathological features of 10 cases from an University Hospital in São Paulo.
abstract: BACKGROUND
  Drug reaction with eosinophilia and systemic symptoms is a severe form of drug-induced reaction with multiorgan involvement.
  
  
  OBJECTIVE
  The aim of this study is to evaluate the epidemiological, clinical and pathological features and prognosis of this drug reaction among patients seen at a dermatology service.
  
  
  METHODS
  Retrospective review of medical records of ten patients diagnosed with drug reaction with eosinophilia and systemic symptoms at the Federal University of São Paulo, from august 2008 to may 2011.
  
  
  RESULTS
  Phenytoin was the leading cause of drug reaction with eosinophilia and systemic symptoms in our cases, followed by allopurinol. Abnormal liver function tests were observed in 7 patients and renal function impairment in 2 patients. In all cases, patients were hospitalized and the culprit drug was withdrawn. The main treatment was systemic corticosteroid. Drug reaction with eosinophilia and systemic symptoms resulted in death in 2 cases. The causes of death were septic shock and hepatic failure.
  
  
  CONCLUSIONS
  Our mortality rate of 20%, supports that drug reaction with eosinophilia and systemic symptoms is a severe form of drug-induced reaction and must be recognized by all dermatologists.
authors.affiliation: Dermatology Department, Universidade Federal de São Paulo, Brazil. lucianebotelho@hotmail.com
authors.forename: Luciane Francisca Fernandes
authors.initials: LF
authors.lastname: Botelho
authors.forename: Viviane Shinsato
authors.initials: VS
authors.lastname: Higashi
authors.forename: Maria Helena Valle de Queiroz
authors.initials: MH
authors.lastname: Padilha
authors.forename: Milvia Maria Simões e Silva
authors.initials: MM
authors.lastname: Enokihara
authors.forename: Adriana Maria
authors.initials: AM
authors.lastname: Porro
mesh_terms: D000328:Adult; D003875:Drug Eruptions / Q000209:etiology; D004342:Drug Hypersensitivity / Q000209:etiology*; D004802:Eosinophilia / Q000139:chemically induced*; D005260:Female; D006785:Hospitals, University; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012720:Severity of Illness Index; D055815:Young Adult