title: Erythema annulare centrifugum in a patient with crohn disease.
abstract: BACKGROUND
  Erythema annulare centrifugum (EAC) represents a hypersensitivity reaction to a variety of conditions, many of which have been reported in the literature.
  
  
  RESULTS
  We report on a 38-year-old woman with a 5-year history of recurrent polycylic, arcuate, scaly, erythematous patches with central clearing on her thighs and trunk. Clinical examination and biopsy were both consistent with a diagnosis of EAC. Two years after the initial presentation, she was diagnosed with mild Crohn disease.
  
  
  CONCLUSIONS
  The prolonged nature of EAC in our patient and our inability to identify known associations of malignancies, including medications, connective tissue disorders, systemic disorders, and infections, led us to postulate that her EAC was related to her Crohn disease. A thorough review of the literature failed to detect any previous reports linking Crohn disease and EAC.
authors.affiliation: Division of Dermatology and Cutaneous Sciences, University of Alberta, Edmonton, AB T6G 2G3.
authors.forename: Michael
authors.initials: M
authors.lastname: Samycia
authors.forename: Thomas G
authors.initials: TG
authors.lastname: Salopek
mesh_terms: D000328:Adult; D003424:Crohn Disease / Q000150:complications*; D004890:Erythema / Q000150:complications* / Q000473:pathology*; D005260:Female; D006801:Humans