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Asthma

Asthma is a disease in which inflammation of the airways restricts airflow in and out of the lungs. The word asthma comes from the Greek word for "panting." The panting and wheezing sound characteristic of asthma occur because of the restricted flow of air. Normally, when you breathe in an irritant or are subjected to a stressor such as exercise, your airways relax and open, allowing...