What is asthma?  Asthma is a lower airway disease that is caused by inflammation.  This airway inflammation results in the asthma triad: Airway swelling (edema) Increased airway mucous production Airway smooth muscle contractions, resulting in further airway constriction (bronchoconstriction) All three factors result in obstruction of airflow, as air travels to and from the lungs. … Continue reading Asthma