(HealthDay News) -- Poison ivy is a plant that can cause a red, itchy rash on the skin.

The American Academy of Family Physicians offers these tips to treat the rash. It also identifies signs that you may need a doctor's attention:

• Try over-the-counter medications to control itching, such as an antihistamine (like Benadryl), calamine lotion and hydrocortisone creams.
• Take oatmeal baths to soothe the skin.
• Fevers of over 100 degrees Fahrenheit require a doctor's attention.
• Rashes that cover the eyes, mouth, genitals or a large area across the body should be treated by a doctor.
• If pus is oozing from the rash, see your doctor.
• See your doctor if the rash does not improve.