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Deviated Nasal Septum (Dns) - Symptoms, Causes and Prevention

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Summary about Deviated Nasal Septum (DNS)

The deviation of the nasal septum from the center of the nasal cavity is known as DNS (Deviated Nasal Septum). The nasal septum is a structure made of bone and cartilage that separates the nasal cavity into two halves. As one of the nostrils is smaller than the other, breathing becomes difficult due to a deviated nasal septum. DNS can be present from birth, develop during development, or be caused by a nose/face injury. The patient may have a common cold, a blockage in the respiratory tract, or other ailments. This condition also causes inflammation of the sinuses, and many patients may experience nosebleeds or postnasal drips.

Symptoms of Deviated Nasal Septum (DNS)

Almost 80% of the population is born with some form of abnormality. The majority of these deformities may not cause any symptoms or be noticed at all. DNS, on the other hand, can cause the following symptoms:

  • Obstruction of the nose
  • Bleeding from the nose
  • Snoring
  • Sleeping on one side over the other
  • Headache, facial pain, and postnasal drip
  • Apnea (sleep apnea)

Causes of Deviated Nasal Septum (DNS)

Following are the causes of DNS:

  • Impact trauma is the most common cause, such as a blow to the face.
  • It could also be a congenital condition caused by the nose being compressed during childbirth.
  • Genetic connective tissue disorders like Marfan syndrome, homocystinuria, and Ehlers–Danlos syndrome are linked to a deviated septum.


If you have a deviated septum, talk to your doctor about whether you need septoplasty surgery. The surgeon will adjust your septum to its normal position during this procedure. In some cases, the surgeon will also perform rhinoplasty to reshape the external appearance of your nose. The surgery is known as a septorhinoplasty when both procedures are performed at the same time.

Preventive Measures of Deviated Nasal Septum (DNS)

Following are the preventive measures:

  • By avoiding nose injuries, you can help to prevent a deviated septum.
  • Wear seat belts to avoid injury whenever you ride in a car.
  • Wear well-fitting headgear during contact sports like football or karate to protect your face.