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Asthma

Asthma is a life threatening lung disease.Its classified as a chronic disease, which lasts for your whole life.It causes a person to have breathing problems.
When someone has an asthma attack, which is a bad breathing episode many complications happen that can hurt the person.The lungs make an increased amount of mucus, which is thick, sticky, and tends to clog up the air tubes.Also, the airway tubes swell because of cells being inflammed.Plus the muscles around the air tube tighten.This is what happens, which makes breathing harder.
Asthma is a major public health problem in the U.S. and asthma prevalence has been on a steep rise since 1980. Though many cases of asthma probably go undiagnosed, health officials estimate that at least 20 million people in the U.S. have asthma, including 6.3 million children.African-Americans have higher rates of asthma emergency room visits, hospitalizations and death than Caucasians. African-Americans visit the emergency room for asthma more than twice as often and are hospitalized for asthma more than three times as often.
Allergens and irritants trigger asthma for many people. Allergens are substances that do not cause problems for most people, but trigger allergic reaction in some people. During an allergy attack, the body releases chemicals called mediators that can trigger asthma episodes. Irritants, such as cigarette smoke, fragrances, paint and gasoline fumes can also trigger asthma. Exposure to irritants can stimulate receptors in the respiratory tract. The receptors send signals to the surrounding airways to constrict which can cause an asthma attack.
There are more specific types of asthma. One for example is cardiac asthma. Cardiac asthma isn’t actually asthma. It refers to the wheezing that’s caused by congestive heart failure. Excess fluid in the lungs (pulmonary edema) associated with heart failure causes signs and symptoms such as shortness of breath, coughing and …

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