J34: Other disorders of nose and nasal sinuses

J34.2: Deviated nasal septum

We need the nose for breathing and smelling. The outside of the nose is composed of bone and cartilage. The nasal septum divides the nasal cavity into two halves. The inside of the nose is lined with a moist mucous membrane. The nasal concha are bony protrusions in the nose, and also lined with mucous membrane.

Your nasal septum is crooked. The space in a nostril can become narrower as a result. If the space in a nostril has become too narrow, it will be hard to breathe through the nose.