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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.
1 Patients with contact dermatitis complain of itching and burning at the site of a red, elevated, crusty, weepy, scaly rash.  Contact dermatitis is diagnosed by its clinical appearance associated with a compatible history from the patient.