Health Tip: What's Behind Nasal Congestion
(HealthDay News) -- Nasal congestion, commonly called a stuffy nose, occurs when the tissues that line the inside of the nose become swollen.
The U.S. National Library of Medicine says common causes of nasal congestion include:
Having the common cold or flu.
Having a sinus infection.
Using nasal sprays or drops for longer than three days.
Having nasal polyps.
Having a condition called vasomotor rhinitis.