Wheezing is a high-pitched whistling sound that occurs while breathing that may be a sign of other health conditions. The sound is most obvious when breathing out, but may also be made when inhaling. The most common symptom of wheezing is whistling or musical sound, which indicates that you have airways obstruction or vocal cord problems. Other symptoms may include coughing, shortness of breath, swelling of the face and tongue, a decreased level of consciousness, tightening in the chest, fever, sore throat, swelling of the tongue or lips, heartburn, itching eyes, nasal congestion, weight loss, night sweat, vomiting, loss of voice, sputum production and laboured breathing, especially when exhaling.