Cross sensitivity in colour developers

Abstract
Color developers are widely used and contact dermatitis and lichen planus-like eruptions from them are well-known. As a result of automation, there are few recent reports of contact dermatitis from color developers. Here 4 cases of dermatoses from Kodak CD4 color developer are described, their cross sensitivity to other color developers and PPD [p-phenylenediamine] are studied. Attempts were made to determine the purity of the patch test allergens to ensure that cross sensitivity was not the result of contamination and decomposition of the allergens.

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