Wheezing: A whistling noise in the chest during breathing. Wheezing occurs when the airways are narrowed or compressed. From Lung Disease/COPD Resources Inoperable Lung CancerHow to Treat COPDSurviving Respiratory Syncytial Virus (RSV) Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19