What are the types and symptoms of allergies

The abnormal immune responses are shown as symptoms on the parts of the body that usually have contacted the allergens. More than ten percent of Americans are affected by allergic rhinitis. For example, airborne pollen from trees, grasses, or weeds may cause seasonal allergic rhinitis such as hay fever shown as sneezing, stuffy or runny [...] http://digg.com/u1I9H0