Eczematous dermatitis (eczema) is a group of conditions characterized by erythematous, papulovesicular, weeping lesions. This patient has acute allergic contact dermatitis (ACD), a form of eczema caused by a type IV (delayed) hypersensitivity reaction to an antigen on the skin surface. In ACD, antigens are taken up by ______ and presented to______, where they incite an inflammatory response within 24 hours of antigen re-exposure.
