Ausmed Explains... 1. Stridor: Stridor is a continuous, high-pitched, crowing sound heard predominantly on inspiration. The cause of this sound is generally the partial obstruction of the larynx or trachea. Stridor may be heard in conditions such as croup and foreign body obstruction. It’s typically loudest over the anterior neck, as air moves turbulently over a partially-obstructed, upper airway. 2. Wheeze: The sound of a wheeze is a high-pitched, continuous musical sound. This is caused by air

Laryngomalacia is the most common cause of noisy breathing (stridor) in infants. It happens when the soft, immature tissues of the voice box (larynx) flop inward during breathing, causing partial airway obstruction. • Onset: Usually noticed within the first few weeks of life. • Symptoms: Inspiratory stridor (high-pitched noise, worse when baby is feeding, crying, or lying on the back), sometimes associated with feeding difficulties, reflux, or poor weight gain in severe cases. • Course: In most