Asthma
Asthma belongs to a class of chronic diseases in which respiratory system takes part. The airway is filled with lots of mucus, stays inflamed and constricts, commonly acting in response to several or only one trigger. The cases are caused by environmental factors, warm or cold air, moist air, exertion or exercise, or emotional conditions. As for children usual triggers are represented by viral diseases as the ones which lead to simple cold. Such episodes result in signs as breath shortness, coughing, wheezing or chest tightness. The airway constricted can be treated by bronchodilators. In periods between such cases patient doesn't complain but experience mild symptoms, and they may feel breath shortness after physical payload for long-lasting time periods in comparison with healthy people. Asthma signs differing from insignificant to dangerous may commonly be regulated by several medicines, as Singulair, and change of environment.