Non-allergic rhinitis

Nature 
Nonallergic rhinitis can be caused by such conditions as a deviated septum, nasal polyps or environmental factors that include cold air, high humidity, strong odors, and inhaled irritants.
Incidence 
Nonallergic rhinitis affects 19 million people each year in the USA. This chronic nasal condition is often misdiagnosed or self-diagnosed wrongly as an allergy.
Broader 
Type 
(G) Very specific problems