title: Allergic contact dermatitis to benzocaine: the importance of concomitant positive patch test results.
abstract: Local anesthetics are widely used in clinical practice, and adverse effects are not uncommon. Delayed hypersensitivity reactions are among the most common effects, but immediate-type reactions may also occur. Patch testing should be considered in patients with hypersensitivity reactions. We present a case of allergic contact dermatitis to benzocaine that was detected incidentally by patch testing and highlight the importance of correctly interpreting patch test results when there are concomitant positive reactions.
authors.affiliation: Servicio de Dermatología, Hospital Clínico Universitario de Valencia, Universidad de Valencia, Valencia, España. ajavigo@hotmail.com
authors.forename: A J
authors.initials: AJ
authors.lastname: González-Rodríguez
authors.forename: E M
authors.initials: EM
authors.lastname: Gutiérrez-Paredes
authors.forename: Á
authors.initials: Á
authors.lastname: Revert Fernández
authors.forename: E
authors.initials: E
authors.lastname: Jordá-Cuevas
mesh_terms: D000779:Anesthetics, Local / Q000009:adverse effects*; D001566:Benzocaine / Q000009:adverse effects*; D017449:Dermatitis, Allergic Contact / Q000175:diagnosis* / Q000209:etiology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010328:Patch Tests
chemical_list: D000779:Anesthetics, Local; D001566:Benzocaine