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Asthma

Asthma is a disease of the lung airways. The airways get swollen and inflamed. They react easily to certain things, like viruses, smoke, or pollen. When the inflamed airways react, they get narrow. This makes it hard to breathe.

 

 

Asthma

Asthma is a chronic medical condition. It has been defined by the National Heart, Lung and Blood Institute of the United States of America as a common chronic disorder of the airways that is complex and characterized by variable and recurring symptoms, airflow obstruction, bronchial hyperresponsiveness (bronchospasm), and an underlying inflammation. The interaction of these features of asthma determines the clinical manifestations and severity of asthma and the response to treatment.

 

What Is Asthma?

Asthma (AZ-ma) is a chronic (long-term) lung disease that inflames and narrows the airways. Asthma causes recurring periods of wheezing (a whistling sound when you breathe), chest tightness, shortness of breath, and coughing. The coughing often occurs at night or early in the morning.

 

 

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