Nasal congestion, a.k.a. stuffy nose, is the blockage of the nasal passages usually due to membranes lining the nose becoming swollen from inflamed blood vessels. These irritated vessels are usually triggered by a cold, flu, allergies, or a sinus infection.

Prolonged use of nasal decongestant sprays or drops can lead to a worsening of nasal congestion. Rarely, tumors of the nasal passages or chronic medical conditions may be the cause of nasal congestion.

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