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Asthma

Source: www.nih.gov
Topic: Asthma
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Sort Desciption: Asthma was a poorly understood disease. Patients complained of not being able to breathe, but there were no effective treatments and severe episodes could easily lead to death.

Content Inside:
Asthma was a poorly understood disease. Patients complained of not being able to breathe, but there were no effective treatments and severe episodes could easily lead to death. People with asthma were often unable to pursue lifes normal activities. Asthma was especially difficult for children, who often had to forego routine playtime and participation in sports or other rigorous events was usually impossible. Scientists gained their first understanding of asthma physiology in the 1950s when they discovered that the difficulties patients experienced in breathing were due to smooth muscle constriction in the airway of the lungs. Researchers also learned that the airways of asthma sufferers were hyper responsive thousands of times more sensitive to a variety of chemicals, environmental factors, and pollutants than airways of normal subjects.

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