Nasal congestion, or the sensation of restricted airflow in a single nasal passage, arises from various underlying causes. This unilateral obstruction can stem from structural anomalies, inflammatory processes, or the presence of foreign bodies within the nasal cavity. The subjective experience is that air movement is significantly reduced or entirely absent in one nostril while the other nostril may function normally.
Optimal nasal breathing is crucial for proper respiratory function, filtering air, and maintaining humidity levels within the respiratory tract. Impedance to airflow in one nasal passage disrupts these processes. Chronic unilateral nasal obstruction can lead to mouth breathing, sleep disturbances, altered sense of smell, and increased susceptibility to sinus infections. Identifying and addressing the underlying cause of this obstruction is essential for alleviating symptoms and preventing potential long-term complications.