👉 Nasosinusitis is a condition that refers to inflammation of the nasal cavity and sinus passages. It occurs when there is an obstruction or blockage in one or both of these cavities, which can lead to symptoms such as congestion, pain, and difficulty breathing. Nasosinusitis can be caused by various factors, including allergies, infections, or trauma. Treatment for nasosinusitis often involves addressing the underlying cause through medications, surgery, or other treatments.