a chronic condition in which the lining of the airways in the lungs is inflamed, swollen and extra sensitive to things we breathe in (triggers)

a chronic condition of the lungs that has two main components

a chronic inflammatory disease of the airways that causes recurrent episodes of wheezing, shortness of breath, coughing, and chest tightness, particularly at night and in the early morning

a common condition affecting one in ten children and one in twenty adults