Hay fever (seasonal allergy) is caused by pollen carried in the air during different times of the year in different parts of the world. If you are allergic to pollen, this allergen triggers symptoms such as sneezing, stuffiness, a runny nose and itchiness in your nose, the roof of your mouth, throat, eyes or ears. It could also trigger an asthma attack in allergic and asthmatic patients.To control hay fever symptoms, it is important to monitor pollen counts.Knowing the pollen count will help you...