Katharina Hansel

May 22, 2023 | frontiersin.org | Angelo V. Marzano |Carlo Alberto Maronese |Angelo Ruggiero |Katharina Hansel

1. IntroductionContact dermatitis (CD) refers to an inflammatory skin condition that occurs after exposure to an exogenous substance (1, 2). Irritant contact dermatitis (ICD) and allergic contact dermatitis (ACD) are the two subgroups of CD which differ in both clinical an pathophysiological aspects (3). Additional CD forms comprise protein CD and photo contact dermatitis, including photoallergic and phototoxic CD (4). Mucous membranes can also be involved.