A wheezing episode can be a frightening and potentially life-threatening respiratory emergency that requires immediate medical attention. Wheezing is characterized by a high-pitched whistling sound during breathing, typically indicating narrowed or obstructed airways. While some mild wheezing may occur with common colds, severe or sudden-onset wheezing episodes can signal serious conditions such as asthma attacks, allergic reactions, pneumonia, or other respiratory emergencies that need urgent medical evaluation to prevent respiratory failure and ensure proper airway management.