Description

Contact dermatitis is a red, itchy rash that develops when the skin reacts to direct contact with an irritating substance or an allergen. It can appear within minutes of exposure to a harsh chemical, or take one to three days to surface after contact with an allergen like poison ivy or nickel.

Causes

Direct skin contact with an irritant (harsh soaps, bleach) or an allergen (poison ivy, nickel, fragrances).

Prevention

Identify and avoid the offending substance. Wear gloves when using household cleaners.

Treatment Options

Washing the area immediately, OTC hydrocortisone, oral antihistamines, or prescription steroids for severe cases.

Myths vs. Facts

Myth: Poison ivy rashes can spread by touching the blisters. Fact: The rash itself isn't contagious; it only spreads if the plant oil (urushiol) is still on your skin or clothes.

When to See a Dermatologist

If the rash is on your face or genitals, widespread, or doesn't improve with OTC hydrocortisone.

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