What is a peanut allergy?
A person with a peanut allergy has an allergic reaction to peanuts. Peanuts can trigger an allergic reaction when they are eaten, when they come in contact with the skin, or when peanut flour is inhaled as dust. Peanut allergies are one of the most common food allergies in the United States. Peanut allergies cause about 75 percent of all severe allergic reactions.

What are the symptoms of a peanut allergy?
Common symptoms of a peanut allergy include rash, hives, facial swelling, eye redness, itching, wheezing, and diarrhea. Additional symptoms of a severe peanut allergy include wheezing, difficulty breathing, dizziness, faintness, sweating, weakness, and fainting.

How does the doctor treat a peanut allergy?
The most effective treatment for a peanut allergy includes avoiding foods that contain peanuts. Allergy shots may be helpful to prevent allergic reactions in those with a severe peanut allergy. Treatment for allergic reactions to peanuts may include antihistamines, corticosteroids, and additional medications that reduce the symptoms of allergic reactions. Treatment for a severe reaction includes epinephrine injections.