heezing is characterized by a strange, high-pitched, whistle-like noise associated with efforts to breathe. It is usually more prominent when exhaling; the noise is a result from narrowed breathing airways. Often times, individuals who wheeze may be accompanied by other respiratory symptoms, such as coughing or shortness of breath. It is also possible that the affected individual does not realize he or she is wheezing until other people points it out. Wheezing children and infants usually grow out of it as their respiratory systems develops more and grows stronger over time.