title: Sunscreen sensitization: a three-year study.
abstract: BACKGROUND
  In the last decade UV filters have been incorporated in a large number of cosmetic products.
  
  
  OBJECTIVE
  The purpose of our study was to evaluate the prevalence of sunscreen allergy in patients with a suspected photodermatitis.
  
  
  METHODS
  108 patients were patch-tested with the Gruppo Italiano Ricerca Dermatiti da Contatto e Ambientali (GIRDCA) standard series and photopatch-tested with the photopatch series.
  
  
  RESULTS
  Allergy and/or photoallergy to sunscreening agents was diagnosed in 8 subjects (7.4%). Oxybenzone was positive in 4 patients, isoproyl dibenzoylmethane in 3 patients, p-aminobenzoic acid and 2-ethylhexyl-p-methoxycinnamate in 1 patient, respectively.
  
  
  CONCLUSIONS
  Our results obtained during a 3-year period (January 1990 to June 1993) confirm that sunscreens are presently the commonest photoallergens.
authors.affiliation: Department of Dermatology, University of Bologna, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Trevisi
authors.forename: C
authors.initials: C
authors.lastname: Vincenzi
authors.forename: C
authors.initials: C
authors.lastname: Chieregato
authors.forename: L
authors.initials: L
authors.lastname: Guerra
authors.forename: A
authors.initials: A
authors.lastname: Tosti
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D017454:Dermatitis, Photoallergic / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013473:Sunscreening Agents / Q000009:adverse effects*
chemical_list: D013473:Sunscreening Agents