Why is my nose blocked?

Overview

Nasal congestion, or a blocked nose, is usually caused by inflammation of the nasal passages. Common causes include allergies (hay fever), colds and flu, sinus infections, nasal polyps, deviated septum, and environmental irritants like smoke or dust. Allergic rhinitis is a frequent cause, triggered by pollen, dust mites, or pet dander. Sinusitis can cause persistent congestion along with facial pain and pressure. Home remedies include using a humidifier, saline nasal sprays, staying hydrated, and avoiding irritants. Over-the-counter decongestants and antihistamines can also help. If congestion persists for more than a week, is accompanied by severe pain or fever, or affects breathing, consult a healthcare provider.

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