Eggs are normally a healthy food, but when you're allergic to them, it's another story. A person who is allergic to eggs will have a reaction to the proteins found in either the egg whites or egg yolks - or both. In an allergic reaction, the body's immune system sees these proteins as harmful invaders and responds by creating specific antibodies to attack and destroy those proteins. This can cause many allergic reactions such as nausea, diarrhea, headache, hives, wheezing and, if the allergy…