What is laryngomalacia?

Abstract

Stridor is a high pitched, noisy or squeaky sound that occurs during inspiration (breathing in). Laryngomalacia is the most common cause of chronic stridor in infants. The stridor from laryngomalacia is generally mild but it becomes louder when babies cry or get excited. It can also be heard while feeding. Stridor due to laryngomalacia is usually more noticeable when babies are laying or sleeping on their back (supine), and it may disappear by changing position. In about 10% of cases, symptoms worsen while the babies are asleep.