How to know it is food allergy?

Symptoms with eating: Food allergy symptoms occur within minutes to a few hours after ingesting or contact with food leading to hives, itching, swelling, nausea, vomiting, abdominal or less likely anaphylaxis. Avoiding the food resolves it. An allergist can review your symptoms and diet and assess for a food allergy vs. Intolerance. Both allergy blood and skin tests are not perfect, but can help guide the allergist.

Immediate Symptoms: Food allergies are typically an immediate reaction minutes to a half hour (max 2 hours) after ingestion of concerning food with symptoms ranging anywhere from hives, wheezing, itching, shortness of breath, wheezing, vomiting, or syncope (fainting). If there is any concern see an Allergist for further workup and evaluation with skin prick or serum testing.