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contact dermatitis

contact dermatitis is inflammation of the skin caused by contact with a substance that causes an allergic reaction. or it can occur from contact with a substance that irritates the skin. a minor case of contact dermatitis may cause mild redness of the skin or a rash of small red bumps, while a more severe reaction may cause swelling, redness, and larger blisters.

a rash usually starts about 48 hours after exposure to the irritating substance. common causes of contact dermatitis include:

  • poisonous plants, such as poison ivy, oak, or sumac.
  • soaps, detergents, shampoos, perfumes, cosmetics, or lotions.
  • jewellery or fabrics.
  • new tools, toys, appliances, or other objects.
  • latex gloves.

the location of the rash may provide a clue about the cause.

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this information does not replace the advice of a doctor. healthwise, incorporated, disclaims any warranty or liability for your use of this information. your use of this information means that you agree to the terms of use and privacy policy. to learn more about healthwise, visit healthwise.org. © 1995-2022 healthwise, incorporated. healthwise, healthwise for every health decision, and the healthwise logo are trademarks of healthwise, incorporated.

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