A "wheeze" is a high-pitched sound made while breathing, often indicating a narrowing of the airways. This sound can occur during inhalation or exhalation and is commonly associated with conditions like asthma, chronic obstructive pulmonary disease (COPD), or allergies. Wheezing can be a sign of respiratory distress and may require medical attention. Wheezing is caused by the vibration of airway walls as air flows through narrowed passages. It can be triggered by various factors, including infections, exercise, or exposure to allergens like pollen or dust. Identifying the underlying cause is essential for effective treatment and management.