Poison ivy, poison oak ... Treating the Rash: If a rash develops, over-the-counter treatments like calamine lotion, hydrocortisone cream, and antihistamines can help alleviate itching and ...

The more you’re exposed to poison ivy, the more severe your allergic reaction may be. If the rash has already appeared, you can try to ease the itch by applying calamine lotion or ...

In severe cases, a doctor may prescribe oral corticosteroids, such as prednisone, to treat poison ivy rash ... itching and other symptoms using calamine lotion, soothing baths, and oral ...

According to the Mayo Clinic, poison ivy rash can be treated at home with cortisone cream, calamine lotion, cool compresses and a cool bath with baking soda or an oatmeal-based product in it.