If you are suffering from sinusitis, please be sure to timely treatment, to avoid missing the best time for treatment, and cause serious harm to the body, the following to give you a specific introduction to the causes of sinusitis disease is what? The reason for the sinusitis is many, summarized in the following points: 1, metabolic body, systemic diseases such as anemia, endocrine deficiencies such as hypothyroidism, pituitary and gonads, acute infectious diseases such as influenza, measles, scarlet fever, diphtheria, etc. can cause sinusitis to occur. 2, the whole body resistance to reduce, such as overwork, cold and moisture, malnutrition, vitamin deficiency, and poor living environment caused by sinusitis. 3, some diseases of the nasal cavity, such as nasal septal deviation, turbinate hypertrophy, nasal polyps, allergic rhinitis, nasal foreign bodies or nasal tumors, can also cause sinusitis. 4, adjacent lesions, such as tonsillitis or adenoid hypertrophy, infection of the maxillary second bicuspid and the root of the leading and second molar, damage to the maxillary sinus bicus during tooth extraction or caries residue falling into the maxillary sinus, etc. can also cause sinusitis. 5, other, such as sinus trauma fracture; swimming diving posture improper such as taking vertical diving, or diving and swimming after blowing the nose improperly, sewage into the sinuses; nasal cavity filler stay too long; high altitude flight quickly fall, sinus cavity and the outside world to form a relative negative pressure, the nasal secretions into the sinuses can also cause the onset of sinusitis. Sinusitis is dangerous, timely treatment is critical! The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. The above is the cause and danger of sinusitis, I hope it will help you. The actual fact is that you can find a lot of people who have been in the business for a long time, so please do your best to prevent and treat it early.