Contact eczema: A localized reaction that includes redness, itching, and burning where the skin has come into contact with an allergen (an allergy-causing substance) or with an irritant such as an acid, a cleaning agent or another chemical. SLIDESHOW Rosacea, Acne, Shingles, Covid-19 Rashes: Common Adult Skin Diseases See Slideshow From Skin Problems and Treatments Resources Understanding Your Child's Atopic DermatitisTreatments for Atopic DermatitisMy Life with Moderate to Severe AD Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19