<unk>  (literally, "soft larynx") is the most common cause of chronic stridor in infancy, in which the soft, immature cartilage of the upper larynx collapses inward during inhalation, causing airway obstruction. It can also be seen in older patients, especially those with neuromuscular conditions resulting in weakness of the muscles of the throat. However, the infantile form is much more common.<unk>  is one of the most common laryngeal congenital disease in infancy and public education about the signs and symptoms of the disease is lacking.
Laryngomalacia
Tracheobronchomalacia
Laryngotracheal stenosis
Tracheomalacia
Subglottic stenosis
Nasal septum deviation
Glossoptosis
Epiglottitis