Understanding the Basics of Hay Fever

hay fever
What is Hay Fever? Allergy characterized by exaggerated immune response to pollen grains and other substances is known as Hay fever. It is also known as allergic rhinitis. It is basically of two types, seasonal and perennial. The allergy which occurs during the time of the year when certain plants pollinate is seasonal and which occurs throughout the year is perennial. If you suffer from this kind of allergy during spring, you are probably allergic to tree pollen. In summer, grass & weed...