Sinusitis is caused by what?

Many of the causes sinusitis, The chronic systemic diseases, malnutrition, lack of vitamins, endocrine disorders, tobacco and excessive or human exertion, cold, cold, choked water, and other incentives, the body resistance weakened; local disease because hypertrophic rhinitis, in the middle turbinate hypertrophy, nasal septum bending , with sudden moments such as nasal septum can be blocked in the nose Road, ventilation and drainage impact; nasal foreign bodies, nasal polyps, nasal tumors, nose bleeding gauze packing off also blocked sinus openings, the impact of its drainage patency. Local lesions, such as chronic tonsillitis, adenoid inflammation. Allergic rhinitis caused sinusitis is an important factor. Neighboring organizations also can gradually invasive sinus infection, such as inflammation of the root through the root attachment or absence of alveolar bone destruction here the thin wall, into the maxillary sinus, caused maxillary sinusitis.