A food allergy is an adverse or abnormal immune reaction to a food or a food additive.

A few specific foods seem to cause a majority of the food reactions. The most common triggers of a food reaction include:

  • Cow's milk
  • Eggs
  • Peanuts
  • Wheat
  • Soy
  • Fish
  • Shellfish
  • Tree nuts (eg, walnuts, pecans)
  • Sesame seed