Asthma is a lung disease that has no known cure. During an asthma episode, the airways in your lungs get swollen and your chest feels tight. You may cough, wheeze or have trouble breathing. This happens when the lungs are exposed to something — a trigger — to which the lungs react.
Here are some common asthma triggers:
Many children with asthma also have allergies. Asthma symptoms can be triggered by these allergies. To help keep triggers away, wash bedding and soft toys weekly in hot water and minimize dust to control dust mites.