Examples of Food Allergies
A child consumes peanut and develops immediate diarrhea, vomiting, wheezing, and full body hives prompting an emergency room visit.
2. Oral Allergy Syndrome
A teenager with significant, seasonal nasal itching, sneezing, and congestion develops an itchy mouth and a sensation of swelling of the throat when eating fresh bananas. If the teen eats banana bread there are no symptoms. The patient is highly allergic to ragweed on allergy testing and negative to banana. The reaction is a cross-reactivity between ragweed and banana.