A stuffy nose, medically known as nasal congestion, occurs when the nasal passages become swollen or inflamed, leading to difficulty breathing through the nose. This condition is commonly caused by viral infections such as the common cold or flu, which result in increased production of mucus and inflammation of the nasal tissues. Allergies to environmental triggers like pollen, dust mites, or pet dander can also cause nasal congestion by triggering an immune response in the nasal passages. Additionally, other factors such as sinus infections, nasal polyps, or structural abnormalities in the nasal passages can contribute to nasal congestion. Symptoms of a stuffy nose may include difficulty breathing through the nose, a feeling of pressure or fullness in the sinuses, decreased sense of smell or taste, and postnasal drip. While nasal congestion can be uncomfortable, it is typically a temporary condition that resolves on its own within a few days. Over-the-counter remedies such as nasal decongestants, antihistamines, saline nasal sprays, or steam inhalation can help alleviate symptoms and improve nasal airflow. However, if nasal congestion persists for more than a week or is accompanied by severe symptoms like high fever, facial pain, or colored nasal discharge, it is important to seek medical attention to determine the underlying cause and receive appropriate treatment.