ABSTRACT
Nasal breathing is the normal path of respiration in human beings. Nasal airway passage accounts for approximately half of the total airway resistance and this resistance is required for optimal respiratory physiology. The nasal airway is composed of two nasal cavities, each with a medial and a lateral wall as well as a floor. The elements involved in the nasal airway could have an adverse effect on the nasal airway patency. The nasal septum is divided into bony, cartilaginous and membranous parts (from cephalad to caudal). Nasal obstruction can be caused by septal deflection which can be developmental or secondary to trauma. An L-shaped strut of septum measuring approximately one centimetre in width is required to support the external nasal skeleton. Septal examination should include inspection as well as palpation. Septal deviation can be present due to the inherent bend of the septal cartilage or as a result of septal tilt due to deviated bony septum.
