What are the causes of rhinitis
1, environmental factors
In workers exposed to environment such as cement, tobacco, coal dust, flour or chemical substances, the nasal mucosa can be irritation and damage by physical and chemical factors, which can cause chronic rhinitis. The environment of rapid temperature and humidity change, such as steelmaking, freezing, baking and other workshop workers, is also easier to take place.
2, physical factors
Vitamin deficiency, such as vitamin A or C.
Excessive tobacco and wine can affect the obstruction of nasal mucosa and vasomotion.
3, local etiology
Acute rhinitis repeated or not thoroughly treated to become a chronic rhinitis.
Chronic inflammation due to long-term stimulation of adjacent or deformities caused by the nose had poor ventilation or drainage obstruction, such as chronic sinusitis, nasal septum, chronic tonsillitis and adenoid hypertrophy.