Nasal Obstruction
Pathogenesis of Nasal Obstruciton
- Viral upper respiratory infections.
- Daycare centers.
- Allergic and nonallergic stimuli.
- Immunodeficiency disorders (e.g., IgA, IgG deficiency).
- Anatomic changes (e.g., deviated septum, concha bullosa, polyps).
Causes of Mechanical Obstruction
- Deviated nasal septum.
- Concha bullosa.
- Foreign body.
- Nasal polyps.
- Congenital atresia.
- Lymphoid hyperplasia.
- Nasal structural changes found in Down syndrome.
