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Irritant contact dermatitis. Irritant contact dermatitis occurs when your skin comes into direct contact with a substance that damages the outer layer of your skin, causing redness, itching, and a burning or stinging sensation.
Causes. Contact dermatitis is caused by a substance you're exposed to that irritates your skin or triggers an allergic reaction.The substance could be one of thousands of known allergens and irritants. Some of these substances may cause both irritant contact dermatitis and allergic contact dermatitis.ontact dermatitis is caused by a substance you're exposed to that irritates your skin or triggers an allergic reaction.