The external nasal valve is the anatomic structure formed by the caudal septum, alar rim, medial crura of the lower lateral cartilage, and nasal sill at the level of the nasal vestibule. Evaluation of external nasal valve dysfunction is dependent upon a thorough history and physical examination. Symptoms and quality of life impact are the main drivers for patients to seek out clinical evaluation. It is paramount that surgeons are familiar with available nonsurgical and surgical options for the management of external nasal valve dysfunction.
Keywords: Caudal septum; External nasal valve; Nasal obstruction; Rhinoplasty.
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