The size and shape of one’s nostrils is quite typical. Unless the nostrils are small or collapse while breathing, they have no influence on breathing. There is no requirement of surgery, if breathing via the nose is not an issue.
The septum is the cartilage that divides the nostrils in the nose. It sits in the middle and splits the nostrils. Many people, however, have an uneven septum, causing one nostril to be larger than the other. A deviated septum is a severe unevenness. It might lead to health problems including a blocked nose or difficulty breathing.
According to American Academy of Otolaryngology – Head and Neck Surgery, there is deviation in 80 percent of all septum. Therefore, treat a deviated septum only if it causes other health problems or has a detrimental impact on quality of life.
A deviated septum might be present at birth. It can also happen because of a nose injury. Thus, contact sports, fighting, and car accidents are all common causes of these injuries. A deviated septum can also get worse as you get older.