Diagnostic Algorithm for Evaluating Nasal Airway Obstruction.

Nasal obstruction is a common symptom and can have a large impact on patient quality of life. There are numerous causes, including anatomic, congenital, inflammatory, infectious, neoplastic, toxic, and systemic. An algorithmic approach can aid in ensuring all pertinent patient information is incorporated into the final diagnosis and treatment plan. Key components include a thorough history, physical examination including modified Cottle and Cottle maneuver, patient-reported outcome measures and/or quality of life questionnaires, examination with and without decongestion, and nasal endoscopy. The resultant information can then be effectively used to narrow the differential and guide the next steps in management.