l would like emphasis on points 1 and 2 above in the question given.
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Asthma is a health condition that causes by allergic reactions which interfere with the breathing ability of a patient. It is a condition in which the airways reduce in width and swell, and produces extra mucus in some cases. It comes with difficulty breathing and causes coughing, wheezing while breathing, and shortness of breath. For some people, asthma is a major issue, while others are a minor nuisance (Mims, 2015, September). Asthma can be life-threatening, especially when the patient encounters a severe asthma attack.