The exact cause of<unk> s is unclear. They are, however, commonly associated with conditions that cause long term inflammation of the sinuses. This includes chronic rhinosinusitis, asthma, aspirin sensitivity, and cystic fibrosis. Various additional diseases associated with<unk>  formation include: Chronic rhinosinusitis is a common medical condition characterized by symptoms of sinus inflammation lasting at least 12 weeks. The cause is unknown and the role of microorganisms remains unclear. It can be classified as either with or without<unk> osis. Cystic fibrosis (CF) is the most common cause of<unk> s in children. Therefore, any child under 12 to 20 years old with<unk> s should be tested for CF. Half of people with CF will experience extensive<unk> s leading to nasal obstruction and requiring aggressive management. Paranasal sinuses: 1. frontal sinuses, 2. ethmoid sinuses (ethmoidal air cells), 3. sphenoid sinuses, 4. maxillary sinuses
Nasal polyp
Nasal septal abscess
Nasal vestibulitis
Trachoma
Nasal septum perforation
Aerosinusitis
Adenoiditis
Rhinosinusitis