What causes asthma

"Asthma" was derived from a Greek word that means "trousers." It is essentially a chronic disease that affects the air passages when they are stimulated by allergens or environmental factors acting as triggers. There are two ways that meet air passages in asthma triggers: 1) a hyper, 2) inflammation. When these responses occur, resulting in typical symptoms of asthma such as coughing, wheezing and shortness of breath or difficulty.

Hypersensitivity: Ultimately, when allergens or other inhaled irritants, resulting in smooth muscle in the air passages become constricted and has become too narrow. Air constriction of the airways when exposed to irritants and allergens is a normal reaction occurs worldwide, however, people with asthma results in a way hyper reactive SWAT.

For people who suffer from asthma, an irritant when inhaled, the air passages relax and open to expel the irritant from the lungs. However, those who suffer from asthma, there is no relaxation of the airway, and instead of becoming narrower, leading to asthma panting. It is, however, that there might be a defect in the smooth muscle of those affected by asthma, perhaps, a lack of critical chemical that prevents muscle relaxation.

Inflammation: Inflammation is the stage of hyper answer. If the air passages are exposed to allergens or other environmental factors trigger the immune system kicks in, giving the immune factors in white blood cells in the region. They cause the air passages to become swollen and fill with fluid and come as a sticky, thick mucus. These combine to cause breathlessness, wheezing, an inability to breathe or breathe properly, and a cough that produces phlegm.

This inflammatory response appears to affect all people affected by asthma, even mild cases.

So what causes asthma?

Although the causes of asthma is not yet fully understood, however, research has shown that it can be triggered by many factors such as genetics, early childhood development and growth of the immune system and lungs, environmental factors, and various types of infections.

Asthma and Genetics: Scientists and doctors to accept the fact that asthma is a hereditary disease. But they were not yet identified or genes are involved. It is believed that genes that are associated with asthma are related to the immune system and lungs. It is known as "atopic diseases", such as asthma, allergic rhinitis and dermatitis, occur in one form or another in the family.

Asthma and the Immune System: Research has shown that the immune systems of adults and children with asthma responds quite differently from those without asthma. People with allergic asthma are, in general, and the factors that cause allergic reactions or other problems. The immune system of allergy sufferers over-react when exposed to substances used as cat dander, mold, and pollen. Sometimes, even the immune system may overreact to bacteria and viruses, which increases the chances of an asthma attack.

Asthma and Children: the first months and years in the life of a child is a critical period during which he / she may be a tendency to develop asthma and to develop it. This is due to abnormal development and growth of the lungs. Premature babies are particularly vulnerable to respiratory diseases and infections because their lungs are not fully developed at birth. Sometimes an infection can cause inflammation, injuring the lung tissues.

Asthma and the Environment: There are several non-immunological or non-allergic environmental factors that may trigger the onset of asthma. When a person susceptible to asthma is exposed to irritants such as secondhand smoke for long periods, it is more likely to develop asthma in their own right. Some other irritants are pollution of air, paint, chemicals and interior.

Research is ongoing to better understand how the above factors affecting the development of allergies such as asthma.

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