About 8 percent of children have a food allergy, and many will experience their first allergic reaction in infancy or toddlerhood.
The most common food allergens are milk, soy, egg, peanut, tree nut, wheat, fish, and shellfish. Signs that may indicate your child has a food allergy include vomiting, diarrhea, a rash or hives, swelling around the mouth and eyes, or difficulty breathing. These symptoms occur when the food allergen is eaten. If your baby experiences any of these symptoms, stop feeding the allergen, and contact your doctor. For symptoms involving difficulty breathing, call 911 immediately.
Reviewed by Dr. Sara Connolly, April 2019