Get In Touch (703) 726-9720 What Is a Food Allergy? A food allergy happens when your immune system mistakes a specific food protein for something harmful. In response, your body releases chemicals such as histamine, which leads to allergy symptoms. Even a tiny amount of the offending food can trigger a reaction, often within minutes of eating. Request More Information (703) 726-9720 Signs & Symptoms Food allergy symptoms can range from mild to severe. Mild symptoms may include itching, hives, swelling of the lips or [...]