Peanut allergy develops when the body’s immune system has an abnormal, hypersensitivity response to one or more of the peanut proteins. Peanut allergy is one of the most common food allergies in both children and adults. It receives particular attention because it is relatively common, typically lifelong, and can cause severe allergic reactions. Peanut allergy is the leading cause of anaphylaxis and death due to food allergy.
It can lead to significant burden on patients and their families. Peanut is a common food ingredient making strict avoidance difficult. Therefore, there is a relatively high rate of accidental peanut ingestions for those trying to avoid peanuts. For all of the above reasons, peanut allergy has become an important public-health issue.