What characterizes the respiratory condition known as stridor?

Stridor is best characterized by noisy breathing that occurs due to a blockage in the airway, particularly in the upper respiratory tract. This noisy sound is usually high-pitched and is often heard when inhaling. Stridor can occur in conditions where there is narrowing or obstruction of the airway, such as in cases of croup, epiglottitis, or an allergic reaction causing swelling. The presence of stridor indicates the need for immediate assessment and potential intervention to ensure that the airway remains open, highlighting its significance in respiratory conditions. The distinction between stridor and other respiratory sounds is essential for proper diagnosis and treatment.