Rhinitis is when a reaction occurs that causes nasal congestion, runny nose, sneezing, and itching. Most types of rhinitis are caused by an inflammation and are associated with symptoms in the eyes, ears, or throat.
There are several types of rhinitis. The most common are acute rhinitis, which is usually caused by a viral illness, allergic or seasonal rhinitis, and nonallergic or year-round rhinitis. Allergic rhinitis is caused when allergens in the air trigger the release of histamine in the body. Histamine causes itching, swelling, and fluid to build up in the fragile linings of the nasal passages, sinuses, and eyelids.
What causes rhinitis?
The most common causes of rhinitis are:
1) Pollen given off by trees, grass, and weeds
2) Dust mites
3) Mold
4) Cockroach waste
5) Animal dander
6) Fumes and odors
7) Temperature
8) Hormonal changes
9) Certain medicines and overuse of topical nose sprays