Asthma is now a days a very common disease. It is a common inflammatory disease of the airways. It may be caused by many factors including allergies to dust,pollution,smoke. Some pain killers may also caude asthma. A sudden change in weather may also result in asthma. The symptoms vary as per individuals but the most common ones are Wheezing, Shortness of breath,Chest tightness, pain, or pressure.