<unk>  is the most common cause of<unk>  obstruction. A history of trauma to the nose is often present including trauma from the process of birth or microfractures. A medical professional, such as an otorhinolaryngologist (ears, nose, and throat doctor), typically makes the diagnosis after taking a thorough history from the affected person and performing a physical examination. Imaging of the nose is sometimes used to aid in making the diagnosis as well.
Nasal septum deviation
Protruding ear
Meatal stenosis
Laryngomalacia
Velopharyngeal insufficiency
Nasal septum perforation
Laryngotracheal stenosis
Midline cervical cleft