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nasal obstruction ENT Difficulty in nasal breathing, due to any obstacle to breathing–eg, a thickened mucosa, polyps, a foreign body, deviated septum. See Nasal stuffiness.
nasal obstruction Interference with the free passage of air through either side of the nose from any cause. Causes of obstruction include swelling of the mucous membrane (NASAL CONGESTION), nasal POLYPS, NASOPHARYNGEAL CARCINOMA or foreign bodies.