Pigmented contact dermatitis and chemical depigmentation

Abstract

Pigmented contact dermatitis on the covered areas was caused by contact allergens from washing powders and textile finishes. On the other hand, pigmented cosmetic dermatitis of the face was caused by various contact allergens in cosmetics, such as fragrances, pigments, etc. The dirty neck of atopic dermatitis is the result of sensitization of mainly dermatophagoides in the patients' homes. In solving such long-lasting disastrous hyperpigmentation, patch test and the elimination of causative allergens are most important. Depigmentation in relation to contact dermatitis is often a product of occupationally used various chemicals. © 2011 Springer-Verlag Berlin Heidelberg.