Asthma — a chronic inflammatory disease of the airways manifested by attacks of breathlessness, often accompanied by a cough, and may develop into asthma. This occurs
Asthma occurs in people of all ages, but most often occurs in children — half of them then "outgrow" their disease. Now more than 300 million people worldwide suffer from this disease and their number is constantly increasing.
Due to the high prevalence of asthma, its ability to reduce the work capacity and cause disability, there are a number of global and national programs to combat the disease. For example, in the UK for such a program is released about a billion pounds a year. At the initiative of the World Health Organization (WHO) is held every year on May 4th World Day against bronchial asthma.
Chronic inflammation, which occurs in patients with bronchial asthma makes the airways sensitive to allergens, chemical irritants, tobacco smoke, etc. When their effects occur edema and bronchospasm, at this moment bronchial mucus produced in large quantities. This prevents the normal passage of air through the airway during breathing.
Depending on the cause of the attack recovered with advantage allergic asthma and non-allergic asthma part.
An indication that asthma is allergic in nature, is that obstreniya occur on contact with certain allergens (pollen, fur, house dust, certain foods) are seasonal. The attack of allergic asthma in humans is often accompanied by a runny nose, symptoms of vegetative dystonia, urticaria.
When non-allergic asthma, a chronic inflammation of the airways overly sensitive. Any irritation causes spasms of the bronchial tubes, and the flow of air over them is limited, leading to bouts of coughing and breathlessness.
Causes an asthma attack can be set. For example, the sharp smell — tobacco smoke, household chemicals, soaps, perfumes, exhaust fumes and other researchers around the world have come to the sad conclusion that one in five asthmatic disease owes his profession.
Asthma symptoms can also occur several minutes after exercise — it might be, for example, the exercise of breathing cold, dry air — such as running outdoors in the winter. In such cases we say about exercise-induced asthma.
Attack, occurs when aspirin or other anti-inflammatory drugs indicates a so-called aspirin asthma.
The cause of asthma caused by nutritional supplements may be, for example, reception sulfites (preservatives beer, wine).
If attack developing, on contact with the allergen, and when exposed to other factors, asthma called mixed. This form is the most prevalent, especially in the later stages of the disease.
In cases where asthma has no clear cause, it is called the unspecified.
How does it manifest?
The most typical manifestations of asthma are:
- cough — may be frequent, painful and permanent. The cough may worsen at night, after the physical effort after inhaling cold air;
- expiratory (with primary difficulty exhaling), shortness of breath — breathing may be so limited that it causes fear can not breathe;
- wheezing, audible in the distance — caused by the vibration of air with the force transmitted through narrowed airways;
In severe or acute asthma attack man during mouth breathing, using for ease of breathing through narrowed airways muscles of the shoulders, neck and torso. Furthermore, when the airways narrowed breathing easier than exhale. This happens because the breath — a procedure familiar to our body and chest muscles are trained on this motion.
Exhalation contrast, normally occurs passively, i.e. without any special effort, so the muscles are not sufficiently developed for the removal of air through narrowed airways. As a result, light is air, and they become swollen.
By the way, young people, long suffering from asthma, it is