Ethics hospital and health services pvt ltd
What is Asthma
In asthma the bronchial tubes are inflamed that causes narrowing of the airways. When the airways or bronchial tubes are narrowed it prevents the free flow of air in the bronchial tubes. The smooth muscles layers surrounding the bronchial tubes are tightened and compress the small bronchioles which causes narrowing of air passages. The narrowing of air passages obstructs the smooth air flow by which the person feels of tightness in chest, shortness of breath and difficulties in breathing. Here one thing need to be discussed why some peoples are getting asthmatic attack but not all. It is because the bronchial tubes of an asthmatic person is overly sensitive to many substances ; when exposed to those substances, the bronchial tubes get narrows and create problem for free flow of air in it. It is because some people are very sensitive to some substances and when get expose to them start reacting adversely and the mucous membrane of the inner layer of bronchial tube get inflamed and initiate the asthmatic condition.
Our immune system is being exposed by various types of foreign substances like bacteria, viruses, different foreign proteins, which always try to get inside our body in each and every moment. But our immune system recognizes them and fight them to throws them out from our body. But in an asthmatic person the immune system is hypersensitive to those substances, which when comes across them starts reacting abnormally. But in a healthy person it is not happen. In other words the immune system of an asthmatic person reacts adversely to those substances whereas the same immune system of a healthy person doesn’t react to them.
Those foreign substances like bacteria, viruses, chemicals, pollutants, dusts, pollens, some food proteins which are called as antigen or allergens. Those antigens or allergens when get inside the body our immune system recognizes them and eliminates them out. Our immune cells like T cells (T lymphocyte) and B cells (B lymphocytes) play the major role to perform this task. A person with hypersensitive immune system when being exposed to those allergens or antigens develops inflammatory reaction in the air passages and develops asthma symptoms.