Asthma involves inflammation of the bronchial tubes (airways), which can make them more sensitive to irritants and allergens. This can lead to coughing, wheezing, and other respiratory symptoms ...

A narrowing of the smallest airways in the lung (bronchioles) causes wheezing. This narrowing results from swelling caused by a virus. The respiratory syncytial virus (RSV) causes most bronchiolitis.

A narrowing of the smallest airways in the lung (bronchioles) causes wheezing. This narrowing results from swelling caused by a virus. The respiratory syncytial virus (RSV) causes most bronchiolitis.