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Background: Fragrances constitute the second most frequent cause of allergic contact dermatitis in Spain.Objectives: To determine the rate of sensitization to the individual fragrances of fragrance mix (FM) I and FM II for each of the demographic and clinical factors included in the MOAHLFA (male, occupational dermatitis, atopic dermatitis, hand dermatitis, leg dermatitis, facial dermatitis, age) index.Methods: We conducted a 5-year retrospective study in 23 Spanish centres. We identified the patients who had undergone patch testing with a specific fragrance series after reacting positively to fragrance markers in a baseline series. We obtained the MOAHLFA index items in this population, then calculated for each demographic and clinical factor the frequencies of sensitization to the individual fragrances of FM I and FM II.Results: A specific fragrance series was patch tested in 1013 patients. The most frequent allergens in men, women, children, and retired people were Evernia prunastri (16%), geraniol (16.6%), isoeugenol (17.9%), and geraniol (22.4%), respectively. Citral (20.5%) and hydroxyisohexyl 3-cyclohexene carboxaldehyde (HICC) (14.5%) were the most common allergens in occupational eczemas and were also associated with a large proportion of hand and facial dermatitis. Conclusions: Frequency of sensitization to the individual fragrances of FM I and FM II varies with age, sex, affected body region, and history of occupational or atopic dermatitis.

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Background: Fragrance chemicals constitute the second most frequent cause of contact allergy in Spain. There are no data available concerning the individual fragrances that are most frequently involved.Objectives: To describe the diagnostic contribution provided by specific fragrance series to the results obtained with baseline series fragrance markers by correlating the results of both series. Materials and methods:We performed a 5-year retrospective study of fragrance markerpositive patients tested with specific fragrance series in 23 Spanish centres. We collected the demographic and clinical characteristics, and compared the results of patch tests obtained from different suppliers.Abbreviations: CI, confidence interval; FM, fragrance mix; HICC, hydroxyisohexyl 3-cyclohexene carboxaldehyde; MP, Myroxylon pereirae.*P < 0.05 in χ 2 tests for group differences.

The prevalence of sensitization to formaldehyde releasers (FRs) differs according to geographic area and has changed over time. Several factors may influence prevalence, including different patch test systems or concentrations or the allergen selection in different baseline patch test series, habits of the populations, and regulations and legal concentration limits in cosmetics. 1,2 Quaterium-15 had been SANZ-SÁNCHEZ ET AL. 173