The nasal septum is completely straight in few people, and it is mostly bent to one side or in different forms. If there is no dysfunction, it is called physiological deviation of the nasal septum and can be left alone. If the nasal septum deviates from the midline and bends to one or both sides or forms locally, causing nasal dysfunction or symptoms such as nasal congestion, headache, nasal bleeding and pus flow, it is called nasal septal deviation. Trauma, tumor and dysplasia are considered to be the causes of nasal septal deviation, but I think not exactly for the following reasons: even without trauma, tumor and other causes, the septum of a person cannot be completely straight (i.e., more than 90% of them are physiological), but many people develop nasal dysfunction or produce symptoms at some time (not for life), after a cold, after fatigue, etc.
It is not comprehensive to leave the other structures of the nasal cavity (turbinates, sinuses, etc.) and the patient’s age, gender, living environment and physical and mental state to diagnose the deviated septum! If it is true that: 1. the deviation of the nasal septum is significant and affects nasal ventilation and sinus drainage; 2. the nasal septal crest causes frequent epistaxis or headache Surgery may be an option. Pre-operative CT of nasal cavity and sinuses and nasopharyngeal examination are necessary.
The following cases should be contraindicated or postponed: 1. acute intranasal infection; 2. untreated sinusitis; 3. certain systemic diseases and diabetes, tuberculosis, severe hypertension, cardiac insufficiency, blood disorders, etc.; 4. female patients in menstruation; 5. those under 18 years of age.