Allergic Rhinitis (Hay Fever)
Allergic rhinitis may be seasonal or year-round. The seasonal allergy, often called "hay fever," typically occurs in the spring, summer or fall. Symptoms include sneezing, stuffy or runny nose and itching in the nose, eyes or on the roof of the mouth. When the symptoms are year-round, they may be caused by exposure to indoor allergens such as dust mites, indoor molds or pets.
Sinusitis is a common allergic disease often triggered by allergic rhinitis. Sinusitis is a swelling of the sinuses, which are hollow cavities within the cheek bones around your eyes and behind your nose.
Source: American Academy of Allergy, Asthma & Immunology