My son has a severe, life threatening allergy to peanuts and tree nuts. We discovered this food allergy when he was two years old and we just could not figure out why he had severe asthma, requiring multiple emergency room visits, steroids and the like. He also randomly developed enormous hives all over his body and had difficulty breathing when the hives occurred. We took him to an allergist who tested him with both a skin test and a blood test, and we learned of the severity and breadth of the allergies.
Food allergies are different from food intolerances. A food intolerance can cause stomach upset, gastric distress, and possibly digestive issues in the form of diarrhea and constipation. Many people claim that they have a food allergy when a food does not agree with them, and this diminishes the severity for those with a true, life threatening allergy. A food allergy is defined as an abnormal response to a food triggered by your body’s immune system, and is most often triggered by the so called “Big 8″. These eight foods account for 90% of all food reactions and are milk, egg, peanut, tree nut, shellfish, sesame, wheat and soy.
You may hear of a person outgrowing their food allergies, but peanut and shellfish most often remain as lifelong allergies. A food allergy affects the breathing and heart and can, if not stopped in time, lead to death. People who have been diagnosed with a food allergy are often prescribed an epi-pen, an auto-injector of epinephrine that must be injected into the upper thigh to stop the reaction.