title: Oral prednisolone induced acute generalized exanthematous pustulosis due to corticosteroids of group A confirmed by epicutaneous testing and lymphocyte transformation tests.
abstract: BACKGROUND
  Acute generalized exanthematous pustulosis (AGEP) is a rare cutaneous eruption which is often provoked by drugs.
  
  
  METHODS
  We report 2 cases of AGEP which showed rapidly spreading pustular eruptions accompanied by malaise, fever and neutrophilia after the administration of systemic prednisolone (corticosteroid of group A, hydrocortisone type). The histological examination showing neutrophilic subcorneal spongiform pustules was consistent with the diagnosis of AGEP. In both cases the rash cleared within a week upon treatment with topical steroids (corticosteroid of group D1, betamethasonedipropionate type and corticosteroid of group D2, hydrocortisone-17-butyrate type). Three months after recovery, the sensitization to corticosteroids of group A was confirmed by epicutaneous testing and positive lymphocyte transformation tests.
  
  
  CONCLUSIONS
  These cases show that systemic corticosteroids can induce AGEP and demonstrate that epicutaneous testing and lymphocyte transformation tests may be helpful in identifying the causative drug. Our data support previous reports indicating an important role for drug-specific T cells in inducing neutrophil inflammation in this disease.
authors.affiliation: Department of Dermatology, Inselspital, University of Berne, Berne, Switzerland.
authors.forename: U
authors.initials: U
authors.lastname: Buettiker
authors.forename: M
authors.initials: M
authors.lastname: Keller
authors.forename: W J
authors.initials: WJ
authors.lastname: Pichler
authors.forename: L R
authors.initials: LR
authors.lastname: Braathen
authors.forename: N
authors.initials: N
authors.lastname: Yawalkar
mesh_terms: D000284:Administration, Oral; D000305:Adrenal Cortex Hormones / Q000009:adverse effects*; D000328:Adult; D005076:Exanthema / Q000139:chemically induced* / Q000276:immunology; D005938:Glucocorticoids / Q000008:administration & dosage / Q000009:adverse effects*; D006801:Humans; D008213:Lymphocyte Activation / Q000276:immunology; D008297:Male; D008875:Middle Aged; D011239:Prednisolone / Q000008:administration & dosage / Q000009:adverse effects*
chemical_list: D000305:Adrenal Cortex Hormones; D005938:Glucocorticoids; D011239:Prednisolone