An overall review on chronic asthma
Abstract
Asthma is chronic disease which mainly affects lungs. All over the world 300 million people are suffering from asthma. Every year 255,000 people are losing their lives around the world because of this chronic disease. Asthma is a disease that causes the airways of the lungs to swell and narrow, leading to wheezing, shortness of breath, chest tightness, and coughing. Asthma is caused by inflammation (swelling) in the airways. When an asthma attack occurs, the lining of the air passages swells and the muscles surrounding the airways become tight. This reduces the amount of air that can pass through the airway. In persons who are sensitive airways, asthma symptoms can be triggered by breathing allergens or triggers. This review mainly explains about the main reasons, symptoms, Diagnosis, Precautions to be taken to avoid further progression, Pathogenesis and treatment of chronic asthma.
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