How to Tell Oral Allergy Syndrome from Food Allergies

A food allergy does not always mean hives or trouble breathing. For some people, eating certain raw fruits and vegetables can cause an itchy or swollen mouth instead. This is known as oral allergy syndrome. Pediatrician Cindy Gellner, MD, explains why people with seasonal allergies may develop oral allergy syndrome, how symptoms differ from anaphylaxis, and when a child’s reactions warrant a conversation with an allergist.