Contact DermatitisContact dermatitis is inflammation of the skin caused by contact with a substance that causes an allergic reaction. 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.
- Jewelry or fabrics.
- New tools, toys, appliances, or other objects.
- Latex gloves.
The location of the rash may provide a clue about the cause. Contact dermatitis does not usually occur with the first exposure to the irritating substance (allergen). After a reaction to the substance occurs for the first time, a rash can occur in response to even very small amounts of the substance. Current as of:
October 13, 2016 Author:
Healthwise Staff Medical Review:
Adam Husney, MD - Family Medicine & Martin J. Gabica, MD - Family Medicine & Amy McMichael, MD - Dermatology |
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