An allergy is simply immunity fighting the wrong enemy. It can happen when a person's immune system reacts improperly to things which are usually harmless and treats them like parasites attacking the body. Allergies often only cause a lot of inconvenience (like runny noses and pesky rashes), but sometimes, they can even be life threatening.
Join our Allergies and Immunity Support Group to find both professionals and lay people who deal with the same problems as you do.