What is poison ivy?
A person with poison ivy has a rash, caused by an allergy to a substance found in a plant. The allergic reaction causes inflammation of the skin, which results in a rash and intense itching. About 9 out of 10 people are allergic to poison ivy, poison oak, or poison sumac.

What are the symptoms of poison ivy?
Symptoms of poison ivy include intense itching and a rash that may form red streaks and blisters on the skin. The skin may become swollen and clear fluid may ooze from the blisters.

How does the doctor treat poison ivy?
Treatment for poison ivy includes oral antihistamines, corticosteroid creams, Calamine lotion, and oral corticosteroids.