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Ring‐shaped positive allergic patch test reactions to allergens in liquid vehicles
Author(s) -
Lachapellle J. M.,
Tennstedt D.,
Fyad A.,
Masmoudi M. L.,
Nouaigui H.
Publication year - 1988
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.1600-0536.1988.tb02810.x
Subject(s) - patch test , patch testing , allergic contact dermatitis , skin test , dermatology , allergy , allergen , medicine , test (biology) , contact dermatitis , chemistry , immunology , pathology , biology , tuberculosis , paleontology
In recent years, we have observed several “ring‐shaped” positive allergic patch test reactions to allergens dissolved in a liquid vehicle, a more intense response at the periphery of the site of application than in the central pan. The occurrence of such reactions was evaluated for fomaldehyde. Kathon CG, hydrocortisone and hexamidine diisethionate. Possible explanations for such reactions include pressure and/or a capillary effect.