title: Identification of risk products for fragrance contact allergy: a case-referent study based on patients' histories.
abstract: BACKGROUND
  Fragrances are the first or second most common cause of contact allergy in dermatitis patients.
  
  
  OBJECTIVE
  The aim of this study was to identify risk products for fragrance contact allergy.
  
  
  METHODS
  The design was a case-control study with a case group of 78 fragrance-mix-positive eczema patients and two control groups, one consisting of 1,279 subjects selected as a random sample of the general population and the other consisting of 806 fragrance-mix-negative eczema patients. The identification of risk products was based on the patients' histories of rash to scented products. Analysis of the associations between first-time rash caused by different specified product categories and fragrance mix sensitivity was performed using logistic regression.
  
  
  RESULTS
  It was found that first-time rash caused by deodorant sprays and/or perfumes were related to fragrance contact allergy in a comparison with both control groups. The risk (odds ratio) of being diagnosed as fragrance allergic was 2.3 to 2.9 greater in cases of a history of first-time rash to deodorant sprays and 3.3 to 3.4 greater in cases of a history of rash to perfumes than if no such history were present. First-time rash to cleansing agents, deodorant sticks, or hand lotions was also statistically significant but only in comparison with one of the control groups.
  
  
  CONCLUSIONS
  Safety evaluation of fragrance materials used in perfumes and deodorant sprays should be performed with special attention.
authors.affiliation: Department of Dermatology, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark.
authors.forename: J D
authors.initials: JD
authors.lastname: Johansen
authors.forename: T F
authors.initials: TF
authors.lastname: Andersen
authors.forename: M
authors.initials: M
authors.lastname: Kjøller
authors.forename: N
authors.initials: N
authors.lastname: Veien
authors.forename: C
authors.initials: C
authors.lastname: Avnstorp
authors.forename: K E
authors.initials: KE
authors.lastname: Andersen
authors.forename: T
authors.initials: T
authors.lastname: Menné
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D003358:Cosmetics / Q000009:adverse effects; D003718:Denmark / Q000453:epidemiology; D003836:Deodorants / Q000009:adverse effects; D017449:Dermatitis, Allergic Contact / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*; D004485:Eczema / Q000453:epidemiology; D005260:Female; D006795:Household Products / Q000009:adverse effects; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D010328:Patch Tests; D010476:Perfume / Q000009:adverse effects*; D018570:Risk Assessment
chemical_list: D003358:Cosmetics; D003836:Deodorants; D010476:Perfume