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Prevalence of contact allergy to non‐disperse azo dyes for natural fibers: a study in 1814 consecutive patients
Author(s) -
Seidenari S.,
Manzini B. M.,
Schoiavi M. E.,
Motolese A.
Publication year - 1995
Publication title -
contact dermatitis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 96
eISSN - 1600-0536
pISSN - 0105-1873
DOI - 10.1111/j.1600-0536.1995.tb00512.x
Subject(s) - patch test , contact allergy , allergic contact dermatitis , dermatology , orange (colour) , contact dermatitis , allergy , medicine , sensitization , patch testing , textile , surgery , chemistry , materials science , immunology , composite material , food science
5 non‐disperse azo dyes, used for colouring natural fibers, were added to the standard patch test series, as 5% pet. Preparations, 1814 consecutive patients attending the patch test clinic were patch tested, of whom 16 (0.88%) reacted to the newly added dyes: 8 to Direct Orange 34. 5 to Acid Yellow 61. 2 to Acid Red 359 and 1 to Acid Red 118. On the basis of clinical history and results of patch tests with pieces of rubrics, contact sensitization to non‐disperse azo dyes seemed to be related to the appearance of skin lesions at least in 8 subjects. We conclude that systematic exploration of the sensitizing potential of textile dyes, selected after careful investigation, can provide additional information on the frequency of occurrence of textile dye dermatitis, supporting individual investigation in sensitized subjects.