Title: Lyral is an important sensitizer in patients sensitive to fragrances
Authors: Frosch, P J ×
Johansen, J D
Menné, T
Rastogi, S C
Bruze, M
Andersen, K E
Lepoittevin, J P
Giménez Arnau, E
Pirker, C
Goossens, An
White, I R #
Issue Date: Dec-1999
Series Title: British Journal of Dermatology vol:141 issue:6 pages:1076-83
Abstract: Contact allergy to fragrances is a common problem world-wide. The currently used fragrance mix (FM) for patch testing has only eight constituents and does not identify all fragrance-allergic patients. As perfumes may contain 100 or more substances, the search for markers for allergy continues. The synthetic fragrance 4-(4-hydroxy-4-methylpentyl)-3-cyclohexene carboxaldehyde (Lyral) was tested together with the FM and 11 other fragrance substances on consecutive patients in six European departments of dermatology. All patients were carefully questioned regarding a history of reactions to scented products in the past and were grouped into four categories: 'certain', 'probable', 'questionable' and 'none'. Lyral (5% in petrolatum) gave a positive reaction in 2.7% of 1855 patients (range 1.2-17%) and ranked next to 11.3% with FM allergy. Twenty-four patients reacted to both Lyral and FM, but 21 (1.1%) reacted positively only to Lyral. Of 124 patients with a 'certain' history, 53.2% reacted to the FM and a further 7.2% to Lyral only. If any kind of history of fragrance intolerance was given, 80% (40 of 50) of Lyral positive patients had a 'positive' history while only 58.6% (123 of 210) of FM positive patients had such a history; this difference was significant at P < 0.01. Lyral was identified by gas chromatography-mass spectrometry in some products which had caused an allergic contact dermatitis in four typical patients who showed a patch test positive to Lyral and negative or doubtful to FM. In conclusion, we recommend the testing of 5% Lyral (in petrolatum) in patients suspected of contact dermatitis.
ISSN: 0007-0963
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory of Dermatology
Laboratory of Dermatoimmunology (+)
× corresponding author
# (joint) last author

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