Allergic Rhinitis

Allergic rhinitis is the set of symptoms that occurs when you breathe in substances you are allergic to. These substances are called allergens.

* Seasonal (intermittent) allergic rhinitis—Sometimes called hay fever or rose fever. This condition occurs during times of the year when allergens are in the air. Spring and Fall are the most common times. The most common allergen is pollen.
* Perennial (persistent) allergic rhinitis—This condition is caused by allergens such as chemicals, dust, dust mites, cockroaches, animal dander, mold spores, or, occasionally, foods. It may occur any time of year that you encounter these allergens.