An IgE allergy reaction can result in symptoms such as a rash or hives and can also be as drastic as anaphylaxis which is where the mouth and tongue swell along with constriction of the airways. People diagnosed with this type of allergy carry an EpiPen with them in case of exposure as extreme reactions are life threatening. An IgE reaction is usually noticed very soon after consuming the food.
The most common allergy foods are peanuts, tree nuts, eggs, soy beans and soy products, dairy, wheat, oranges, shellfish and fish.
Food intolerance or sensitivity is where the body has developed an IgG mediated immune reaction to a food. This is where IgG antibodies are created in the body after it recognises the protein in that food as an allergen or “enemy”.