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Food allergy can develop at any age, but is most common in young children aged less than five years. Nine foods cause 90% of food allergic reactions, including cow's milk, egg, peanut, tree nuts, sesame, soy, fish, shellfish and wheat. Symptoms of a true food allergy develop following exposure to an allergen and can include: Hives; swelling of the lips, eyes or face; vomiting; or wheeziness. Anaphylaxis is the most severe form of allergic reaction and can be life-threatening.1

1 Australasian Society of Clinical Immunology and Allergy (ASCIA). Food allergy [Internet]. ASCIA, Balgowlah, 2015. Available: