Rhinitis Rhinitis is inflammation of the lining of the nose, which may be caused by allergies or other factors. Rhinitis can be either acute or chronic. Perennial allergic rhinitis, a type of chronic rhinitis is a year-around problem, and is often caused by indoor allergens, such as dust and animal dander.
Vasomotor rhinitis is thought to occur because of abnormal regulation of nasal blood flow.
Rhinitis can be treated using medicines such as antihistamines or anti-inflammatory agents, such as nasal glucocorticosteroids.