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contact dermatitis
a skin rash, usually with itching, swelling, blistering, oozing, and scaling, caused by direct contact between the skin and
a substance to which the person is allergic or sensitive. The most common type is from allergy to poison ivy and other plants of the genus Rhus; certain other, less common plants can cause similar reactions. Contact dermatitis may also be caused by industrial oils,
medicines, cosmetics, perfumes, mouthwashes, deodorants, rubber, plastics, metals, and clothing made of certain materials
or treated with certain preservatives and dyes. There is a nonallergic form called irritant dermatitis. Called also contact allergy.

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