Asthma developed around the time of George Washington. Allergy is a common cause of asthma.
Swimming is the best- tolerated exercise for asthmatics.
Asthma is a disease that will always require the patient to take medication. Males get asthma more than females. Most children outgrow asthma. Asthma causes more hospital and emergency room admissions than any other chronic illness of childhood. It goes back at least as far as the Greeks.