The proteins found in the egg whites usually cause allergic to eggs reaction but in rare cases some individuals have been know to be allergic to the yolks of eggs. People with allergies to eggs have a good chance of being allergic to chicken products. As your body becomes sensitized to the eggs allergens, you may react to the ingestion of chicken products as well.
If you have an Egg Allergy then you suffer from Allergies Type 1, also called Contact Allergies. The immune system overreacts to the proteins found in the eggs. The immune system products antibodies that are designed to fight off the harmful egg proteins. The reason the body overacts to certain foods is not clear and more studies are needed.