Increased asthmatic attacks in certain seasons are related to :
Inhalation of seasonal pollen
Bronchial asthma is an allergic disease caused due to hypersensitivity to foreign substances such as dust, pollens, mould spores, fabrics, fur, cosmetics, food, drugs etc. Every spring there is a huge increase in the amount of pollen in the air, which increases asthmatic attacks in individuals allergic to pollen.