A deviated nasal septum (DNS) occurs when the thin wall of bone and cartilage separating the two nasal passages is displaced or crooked from the midline. A mild deviation may cause no symptoms, while a more pronounced deviation can narrow one or both nasal passages and interfere with normal airflow. A deviated septum may occur alone or together with enlarged turbinates, allergic rhinitis, chronic sinus disease, or other nasal conditions that contribute to breathing difficulties.
Timely evaluation matters when a deviated septum causes persistent nasal obstruction, recurrent symptoms, sleep disturbance, or difficulty breathing through the nose. Treatment can help determine whether symptoms stem primarily from the septal deviation or from associated conditions such as turbinate enlargement, allergies, or chronic rhinosinusitis.
Causes
The severity of the deviation varies. Some people have no noticeable symptoms, while others experience persistent nasal blockage or difficulty breathing through one or both nostrils.
Risk Factors
Septoplasty : Septoplasty is the main surgical treatment for persistent symptomatic septal deviation. During the procedure, the surgeon accesses the septum through the nose and corrects or removes selected portions of displaced cartilage and bone while preserving adequate structural support.
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Septorhinoplasty: Patients with significant external nasal deformity, structural collapse, previous trauma, or complex nasal obstruction may require septorhinoplasty or reconstructive procedures in addition to septal correction. These procedures are individualised according to functional and, when relevant, cosmetic requirements.









Istanbul, Turkey
Apart from in-detail treatment procedures available, Asya Hospital located in Istanbul, Turkey has a wide variety of facilities available for International Patients. Some of the facilities which are provided by them are Accommodation, Airport Transfer, Choice of Meals, Interpreter, SIM, TV inside room. Also listed below are some of the most prominent infrastructural details:

Istanbul, Turkey
Liv Hospital Ulus located in Istanbul, Turkey is accredited by JCI. Also listed below are some of the most prominent infrastructural details:

Istanbul, Turkey
Avcilar Anadolu Hospital located in Istanbul, Turkey is accredited by JCI. Also listed below are some of the most prominent infrastructural details:
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Otolaryngologist
22 Years of Experience
Dr. Sethi has worked as a Senior Consultant, ENT/Otorhinolaryngology at Fortis Hospital, Shalimar Bagh Currently he is a member of the Medical Council of India (MCI), Delhi Medical Council and Association of Otolaryngologists of India (AOI). View More
Last Reviewed - January 2026