It's a go-to for poison ivy, bug bites, or any allergic reactions that cause itching or rash, Khatri says. If you cannot identify a rash or bite, check with your doctor. But, if you can pinpoint the allergic trigger that you came in contact with (poison ivy, a certain metal, or a soap or cosmetic), one of these low-strength OTC creams can help relieve the irritation. And as a general rule, if the rash or irritation doesn't clear up in five days to a week, schedule an appointment with your doctor to get it checked.
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