title: Acute generalized exanthematous pustulosis associated with pseudoephedrine.
abstract: Acute generalized exanthematous pustulosis (AGEP) is an uncommon skin disorder most often caused by drugs. Few adverse reactions to sympathomimetic drugs have been reported, despite their extensive use. Although the aetiology of AGEP remains uncertain, recent data have reported involvement of drug-specific T cells and interleukin (IL)-8 production. We characterized an adverse reaction to pseudoephedrine both clinically and immunologically. Histological analysis of skin biopsies confirmed the clinical entity as AGEP, while epicutaneous tests confirmed the specificity of the reaction to the drug. Moreover, immunohistochemical studies showed a mononuclear infiltrate consisting of activated memory T cells in addition to polymorphonuclear cells. Reverse transcription-polymerase chain reaction revealed an increased expression of IL-8 in AGEP-affected skin.
authors.affiliation: Department of Allergy, Hospital Universitario La Paz, P degrees Castellana 261, 28046 Madrid, Spain.
authors.forename: M A
authors.initials: MA
authors.lastname: Padial
authors.forename: J
authors.initials: J
authors.lastname: Alvarez-Ferreira
authors.forename: B
authors.initials: B
authors.lastname: Tapia
authors.forename: R
authors.initials: R
authors.lastname: Blanco
authors.forename: C
authors.initials: C
authors.lastname: Mañas
authors.forename: M
authors.initials: M
authors.lastname: Blanca
authors.forename: T
authors.initials: T
authors.lastname: Bellón
mesh_terms: D000208:Acute Disease; D000328:Adult; D003875:Drug Eruptions / Q000209:etiology*; D004809:Ephedrine / Q000009:adverse effects*; D005076:Exanthema / Q000139:chemically induced*; D005260:Female; D006801:Humans; D012872:Skin Diseases, Vesiculobullous / Q000139:chemically induced*; D013566:Sympathomimetics / Q000009:adverse effects*
chemical_list: D013566:Sympathomimetics; D004809:Ephedrine