Reactive Airway Disease... what is it? If your baby is suffering from breathing problems, you may have heard the term "reactive airway disease" before. It basically means that your child's airways are delicate and breathing can be affected by many things such as cold weather and illness, and they may or may not have asthma. Asthma is not diagnosed until at least age two... something I did not know! This story is about our run-in with reactive airway disease that landed us in the hospital, and the amazing care we received from Children's Hospital in Seattle.