The curvature of the septum of the nose (deviation of the septum of the nose, deformation of the septum of the nose, the crest of the septum of the nose, the spine of the septum of the nose) is a change in its shape resulting from a trauma (fracture) or abnormal formation of its bone-cartilaginous skeleton, causing difficulty in nasal breathing or development of changes or diseases neighboring organs (nasal conchae, paranasal sinuses, middle ear, etc.)