The document outlines the procedures and treatments for Deviated Nasal Septum (DNS), highlighting submucous resection (SMR) and septoplasty as surgical options. SMR has largely been replaced by septoplasty, which conservatively preserves much of the nasal framework while addressing significant obstructions. It also discusses complications such as septal haematoma and abscess, perforations, and associated clinical features, treatment options, and postoperative care.