If your child recently had milk, soy, eggs, wheat, tree nuts, peanuts, fish, or shellfish, your suspicion of a food allergy may be warranted because these foods account for approximately 90 percent of children’s food allergies. However, it is also important to note how long ago your child had these foods, because food allergies typically cause acute symptoms within two hours of the food being eaten, unlike food intolerances, which may cause symptoms as many as 12 hours later.
Reviewed by Dr. Sara Connolly, April 2019
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