What is allergic rhinitis?
An allergen is an otherwise harmless substance that causes an allergic reaction. Allergic rhinitis, or hay fever, is an allergic response to specific allergens. Pollen is the most common allergen in seasonal allergic rhinitis. These are allergy symptoms that occur with the change of seasons.
Nearly 8 percent of adults in the United States experience allergic rhinitis of some kind, according to the American Academy of Allergy, Asthma & Immunology (AAAAI). Between 10 and 30 percent of the worldwide population may also have allergic rhinitis.
Symptoms of allergic rhinitis
Common symptoms of allergic rhinitis include:
You’ll usually feel one or more of these symptoms immediately after coming into contact with an allergen. Some symptoms, such as recurrent headaches and fatigue, may only happen after long-term exposure to allergens. Fever isn’t a symptom of hay fever.
Some people experience symptoms only rarely. This likely occurs when you’re exposed to allergens in large quantities. Other people experience symptoms all year long. Talk to your doctor about possible allergies if your symptoms last for more than a few weeks and don’t seem to be improving.