Asthma is a bronchial attack that becomes sensitive andnarrow.
Bronchial asthma is a disease that has wheezing, shortness of breath, and resolves on its own or with treatment. Asthma attacks include symptoms such as wheezing, severe coughing, and shortness of breath. The mucous membranes of the respiratory tract, including the bronchi of asthmatics, accumulate cells and lymphocytes, mostly eosinophils (a type of white blood cell), and inflammation even if the attack subsides. As a result, the muscles around the bronchial tubes contract with a slight stimulus, narrowing the airways and causing airway obstruction.
Background
According to the WHO, the prevalence of asthma has continued to rise since the 1970s, with 235 million patients worldwide. More than 25 million people in US are affected. It is one of the most common children diseases. Affecting millions of children in the US. This condition is more common in boys before puberty and girls after puberty. It is also relatively common in non-Hispanic blacks and Puerto Ricans.
Despite the increasing prevalence, mortality has decreased in recent years. In the United States, asthma kills about 3,400 people a year. However, mortality in blacks is 2-3 times higher than in whites. Asthma is the leading cause of hospitalization in children and is the most common chronic disease that causes absenteeism in the early period. Total medical costs and productivity due to asthma are estimated at $ 56 billion annually.
