contact dermatitis

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contact dermatitis

dermatology

Written and fact-checked by The Editors of Encyclopaedia Britannica

Last Updated: Mar 21, 2024 • Article History

contact dermatitis

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Category: Science & Tech

Related Topics:: skin disease; dermatitis; diaper rash

On the Web:: Harvard Health Publishing - Contact Dermatitis (Mar. 21, 2024)

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contact dermatitis, localized redness and swelling of the skin, together with the formation of vesicles (blisters) in more severe cases, caused by skin contact with irritating chemical substances. Certain chemicals, such as lime or nitric acid, produce inflammation in all persons on first contact. Other agents, ordinarily innocuous (e.g., cosmetics, soaps, clothing), cause inflammation after susceptible persons acquire sensitivity by repeated exposure. Prevention of contact dermatitis rests upon the identification of the particular irritant and its subsequent avoidance.

This article was most recently revised and updated by Amy Tikkanen.