Food Allergy

Overview

This immune system reaction is triggered by certain foods. Your immune system can react if you eat, touch or breathe in particles of the food. Even a very small amount can trigger a reaction. Many types of foods cause immune system reactions. Some common examples are shellfish, peanuts, tree nuts, eggs, milk, wheat and soy.

Causes

We don't understand what causes a food allergy to develop. It's like your immune system has made a mistake. It treats a certain food as if it's harmful to you. When you're exposed to this food, your immune system reacts quickly. It releases chemicals into your bloodstream to protect you. But these chemicals overwhelm your body.

Symptoms

An allergic response to a food can cause a runny nose, and itching or tingling of the mouth and throat. Your throat may tighten, and your breathing my be affected. Your skin may turn red, and hives may form. You can have nausea, vomiting, cramps or diarrhea. A severe reaction may cause your airways to constrict. You may have a rapid pulse and a drop in blood pressure. You may lose consciousness. This is a reaction called "anaphylaxis." It's a medical emergency.

Treatment

There is no cure for food allergy. But there are things you can do. Talk to your healthcare provider about ways you can stay safe.

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.