Background:Nasal obstruction is one of the most frequent complaints in otolaryngology practice, arising from a wide range of structural and mucosal causes. Diagnostic nasal endoscopy (DNE) has emerged as a valuable tool for accurate visualization of intranasal anatomy and pathology, enabling precise diagnosis and treatment planning. Material and Methods:This hospital-based cross-sectional study was conducted on 124 patients presenting with nasal obstruction. After obtaining informed consent, all subjects underwent detailed clinical evaluation followed by diagnostic nasal endoscopy using 0° and 30° rigid endoscopes under local anesthesia. Endoscopic findings were systematically recorded and analyzed using descriptive and inferential statistics. Results:Most patients were between 26 and 40 years of age, with a male predominance. Unilateral obstruction was more common than bilateral. Endoscopic examination revealed deviated nasal septum as the most frequent finding, followed by inferior turbinate hypertrophy, mucosal edema, and nasal polyps. Concha bullosa and sinonasal mass were observed less frequently. Deviated nasal septum was significantly associated with unilateral obstruction (p < 0.001), whereas turbinate hypertrophy and nasal polyps were more common in bilateral cases (p = 0.006 and p = 0.001, respectively). Mucosal edema or discharge also showed a significant correlation with laterality (p = 0.047).

Nasal obstruction; Diagnostic nasal endoscopy; Deviated nasal septum; Turbinate hypertrophy; Nasal polyps