Contact dermatitis is a common disease that is caused by repeated skin contact with contact
allergens or irritants, resulting in allergic contact dermatitis (ACD) and/or irritant contact
dermatitis. Attempts have been made to identify biomarkers to distinguish irritant and allergic
patch test reactions, which could aid diagnosis. Some promising candidates have recently
been identified, but verification and validation in clinical cases still need to be done. New
causes of ACD are constantly being recognized. In this review, 10 new contact allergens …