Getting congested at night is common and happens mainly because when lying down, gravity affects nasal drainage, causing mucus to build up in the sinuses. Also, blood flow to the nasal area increases in a horizontal position, making the nasal tissues swell and further block airflow. The sensitive lining of the nasal passages can react to allergens, irritants, or changes in temperature by swelling, which adds to congestion. Additionally, anatomical issues like a deviated septum or nasal polyps can worsen congestion at night. This nasal blockage can be triggered by allergies, infections, sinusitis, or other inflammation in the nose and sinuses. Because of your congestion, mouth breathing becomes necessary during sleep, which might also lead to snoring.
In essence, the combination of lying down, physiological reactions in nasal tissue, and potential underlying nasal conditions contribute to nighttime congestion. Identifying the exact cause can help in finding the right treatment or relief measures.
