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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.
Itching of the skin in exposed areas is a common symptom. In the case of an allergic dermatitis, itching can be severe. Dermatitis caused by an irritant may also cause burning or pain. Allergic dermatitis often causes a red, streaky, or patchy rash where the substance touched the skin. The allergic reaction is often delayed, with the rash appearing 24 â 48 hours after exposure. Irritant dermatitis often shows as dry, red, and rough skin. Cuts (fissures) may form on the hands.