Common symptoms of deviated septum include nasal congestion, decreased sense of smell, frequent nosebleeds, headaches, sinus infections, etc., and the longer the symptoms last, the more serious they can be, resulting in cardiovascular and cerebrovascular complications. 1. Nasal congestion: it is a common symptom of deviated nasal septum, mostly persistent, and in serious cases, it can also lead to decreased sense of smell, repeated respiratory infections, open-mouth breathing during sleep, and even cardiovascular and cerebrovascular diseases. 2. Nosebleed: mostly seen on the convex side of the deviated septum, where the mucous membrane is more tense and thin, so it is easier to bleed. In severe cases, repeated bleeding may cause anemia. 3. Headache: When the deviated part presses the inferior turbinate, it can cause reflex headache on the same side. Frequent symptoms may affect the spirit and mood, inducing depression and anxiety. 4. Infection:High septal deviation can induce purulent sinusitis or fungal infection when it impedes sinus drainage. In severe cases, it can lead to orbital and intracranial complications. If you have a deviated septum, it is recommended that you go to the hospital in time to improve the relevant examination and active treatment under the guidance of the doctor.