
18. Looking deeper into allergic rhinitis.
As mentioned above, allergic rhinitis, also known as “hay fever”, is an allergic reaction to tiny particles in the air, called allergens. When you breathe in these allergens through your mouth or nose, your body reacts by releasing a natural chemical known as histamine. Several outdoor and indoor allergens can cause hay fever for anyone.
Some common causes of allergic rhinitis include mold, dust mites, pet dander, and of course, pollen from trees and other plants (via Cleveland Clinic). You can very well have hay fever at any time of the year. You may have heard of seasonal allergies, which occur in the spring, summer, and early fall when weeds and trees bloom and pollen counts increase. Perennial allergies are allergies that can happen year-round. Irritants always around, such as pet dander, dust mites, and pesky cockroaches, cause this type of allergy (via Healthline).