Asthma is a chronic inflammatory disease of the respiratory tract, manifested by attacks of breathlessness, often accompanied by coughing and may develop into asphyxia. This happens because respiratory tract has hypernormal reaction on different irritator . In response to a excitation, they become narrower and produce a lot of mucus, interrupting the normal flow of air during breathing. Asthma is phenomenon of all ages, but most often occurs in children - half of them then "outgrow" their disease. Now, more than 300 million people worldwide have the disease and their number is constantly increasing...