title: Immediate and delayed photocontact dermatitis from isopropyl dibenzoylmethane.
abstract: Immediate and delayed photocontact dermatitis from the UVA absorber isopropyl dibenzoylmethane is described in 1 patient. In a dose response study in a 2nd patient with delayed photocontact dermatitis, the minimal dose of UVA needed to elicit a positive photopatch to isopropyl dibenzoylmethane 2% was determined to be 2 J/cm2.
authors.affiliation: St John's Hospital for Diseases of the Skin, London, UK.
authors.forename: G M
authors.initials: GM
authors.lastname: Murphy
authors.forename: I R
authors.initials: IR
authors.lastname: White
authors.forename: E
authors.initials: E
authors.lastname: Cronin
mesh_terms: D000328:Adult; D001565:Benzoates / Q000008:administration & dosage / Q000009:adverse effects*; D047188:Chalcones; D003877:Dermatitis, Contact / Q000175:diagnosis / Q000209:etiology*; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D006969:Hypersensitivity, Immediate / Q000139:chemically induced* / Q000175:diagnosis; D010328:Patch Tests; D013473:Sunscreening Agents / Q000009:adverse effects*
chemical_list: D001565:Benzoates; D047188:Chalcones; D013473:Sunscreening Agents; C049936:4-isopropyldibenzoylmethane