Asthma is a chronic illness that affects the airways, and it is also a common disease that affects many people in the world. In most cases, the Asthma disorder is mild and is often unrecognizable. However, the growth of industrialization and consequence, the invasion of allergens in our body can develop the incidence of asthma. The main symptoms of asthma are recurrent breathing problems, severe breathing, dyspnoea, cough, chest tightness and so on.
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