Nasal obstruction

Blockage of the nasal passage on 1 or both sides of the nose. The most common cause of nasal obstruction is inflammation of the mucous membrane lining the passage (see nasal congestion). Other causes include deviation of the nasal septum, nasal polyps, a haematoma (a collection of clotted blood) usually caused by injury, and, rarely, a cancerous tumour. In children, enlargement of the adenoids is the most common cause of nasal obstruction.


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