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Contact dermatitis is a rash caused by direct contact with or an allergic reaction to certain substances. Irritant contact dermatitis (A) usually produces a dry, scaly, non-itchy rash. Many substances, such as cleaning products or industrial chemicals, that you come into contact with cause this condition. The irritant will cause a rash on anyone exposed to it, but some people's skin may be more easily affected.

Allergic contact dermatitis (B) produces a very itchy, red rash with bumps and sometimes blisters. Common allergy-causing agents (allergens) are latex rubber, nickel and poison ivy. Allergic contact dermatitis develops after your initial exposure to the allergen.

To treat your rash, try to figure out what caused it and avoid that substance. You can also apply medicated cream to help improve symptoms.

Oct. 21, 2016