What is a nasal septal deviation?

A nasal septal deviation is a condition where the nasal septum—the cartilage and bone structure that divides the nasal cavity into two nostrils—is displaced to one side. This can lead to obstructed airflow, difficulty breathing, and may contribute to sinus problems or snoring. Deviations can be congenital (present at birth) or result from injury or trauma. Treatment options include medications for symptoms or surgical intervention, such as a septoplasty, to correct the deviation.