The thin wall, or nasal septum, between your nasal passages is primarily made up of bone and cartilage. A deviated septum occurs when the nasal septum is crooked or off center and causes one nasal passage to be significantly smaller than the other. Often times, people are born with a deviated symptom but, in some cases, it can be developed after an injury to the nose. This condition can make breathing difficult and cause many other symptoms. Read on to find out more: