Abstract
Contact dermatitis (CD) is a common itchy inflammatory skin disease. It is the most common skin disease in industrialized societies. In a recent study the incidence rates of CD was found to be 13.4 % and the point prevalence was found as 20.1 % (Mortz, Bindslev-Jensen and Andersen Br, J Dermatol 2013;168(2):318–25). There are two main types of CD: irritant contact dermatitis (ICD) and allergic contact dermatitis (ACD). Most cases are ICD (80 %). ICD is a non-immune non specific reaction caused by direct injury to the skin by strong irritants like: strong acids and alkalis. ACD is an immune mediated delayed type hypersensitivity reaction induced by many materials (allergens) like: metals, preservatives, perfumes, rubber, resins, dyes and many more. This type of CD appears only in patients that previously were sensitized to these materials (Ale and Maibacht, Expert Rev Clin Immunol 2010;6(2):291–310). Patch tests are used to identify the culprit allergens. In this article we will discuss the issues of contact dermatitis and patch testing in pregnancy.
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