Nasal septum correction generally does not leave sequelae, the possible complications after the surgery include septal hematoma, abscess, nasal bridge collapse and nasal adhesion. 1. Nasal septum hematoma, abscess: endoscopic nasal septum surgery is a minimally invasive surgery, during which the nasal septum needs to be sutured through and through, and the mucous membrane of the nasal septum is damaged during the surgery, which leads to the emergence of submucosal hematoma, abscess and other sequelae. 2. Nasal bridge collapse: In order to achieve the ideal correction effect, it is necessary to remove part of the nasal septum bone, when too much bone is removed near the bridge of the nose, it will increase the risk of nasal bridge collapse. 3. Nasal adhesion: The operation process of nasal septum surgery will cause some damage to the mucous membrane of nasal septum and the corresponding nasal turbinate, so it may cause nasal adhesion and other sequelae after the operation. Smaller adhesions will not cause obvious symptoms, but if the adhesions are more serious, they may cause nasal congestion and headache, and need to be corrected after the surgery. Therefore, although nasal septum correction is a minimally invasive surgery, there are still certain risks, and you need to go to a regular hospital for the surgery. If you experience nasal congestion, nosebleed, headache and other uncomfortable symptoms after the surgery, it is recommended that you consult a doctor in a timely manner to clarify the cause of the disease and standardize the treatment.