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What is asthma? What causes it? What are the symptoms of asthma? Who gets asthma? How is asthma treated? Asthma medications? Drug-induced asthma Exercise-induced asthma Allergic asthma Non-allergic asthma Smart building syndrome Hygiene hypothesis Shortness of breath Cough Wheezing Chest tightness Occupational asthma Asthma diagnosis Chest X-ray CT and asthma reversibility test Breath test Pulmonary function test Eosinophil and asthma