title: Adverse reaction to pseudoephedrine.
abstract: A patient developed a scarlatina-like rash on two separate occasions after receiving a dose of pseudoephedrine. Patch tests with this substance and other structurally related substances (i.e. ephedrine, phenylephrine, and epinephrine) were negative. The oral test with pseudoephedrine provoked a new episode. It is difficult to clarify the exact mechanism of the described reaction; the nature of this eruption probably resembles many other drug-induced adverse reactions in which there is no certainty if mechanisms of type I or III are involved.
authors.affiliation: Allergy Department, Hospital Clinic Universitari, Valencia, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Rochina
authors.forename: E
authors.initials: E
authors.lastname: Burchés
authors.forename: C
authors.initials: C
authors.lastname: Morales
authors.forename: J V
authors.initials: JV
authors.lastname: Brasó
authors.forename: A
authors.initials: A
authors.lastname: Pelaéz
mesh_terms: D000328:Adult; D003875:Drug Eruptions / Q000209:etiology*; D004809:Ephedrine / Q000009:adverse effects*; D005260:Female; D006801:Humans
chemical_list: D004809:Ephedrine