Peanut Allergy: Symptoms & Signs

Medically Reviewed on 9/2/2020

Peanut allergy refers to an allergic reaction to peanuts or products containing peanuts. It is a type of food allergy that is fairly common in developed countries, and most of those affected are children under the age of 3. Peanut allergy is most likely to occur in people with other allergies or family history of allergies.

About 90% of reactions to peanuts occur within 20 minutes of exposure. Signs and symptoms can include

More severe signs and symptoms associated with allergic reactions can include

Cause of peanut allergy

An overreaction of the immune system to peanuts causes a peanut allergy.

Other peanut allergy symptoms and signs


Common Allergies: Symptoms and Signs See Slideshow

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Jameson, J. Larry, et al. Harrison's Principles of Internal Medicine, 20th Ed. New York: McGraw-Hill Education, 2018.