Allergy is an unpredictable reaction of the body to a particular substance called allergen.
-Some substances that trigger allergy symptoms are pollen, dust, different kinds of grasses, mites, etc.
-Symptoms of allergies include sneezing and an itchy, runny or blocked nose, watering eyes, wheezing, chest tightness, shortness of breath and a cough.
-These factors act as triggering agents for hay fever and asthma.