A blocked nose occurs when the nasal passages become congested due to mucus buildup or inflammation. This can be caused by allergies, colds, or sinus infections. A blocked nose makes it difficult to breathe through the nose and can lead to discomfort and irritation. Common remedies for a blocked nose include using saline nasal sprays, steam inhalation, and staying hydrated to help loosen mucus. Keeping the nasal passages clear can help improve breathing and overall comfort. If you're looking for solutions to relieve a blocked nose, several treatments are available to help clear congestion.