The book presents in an accessible form all the main issues related to one of the most widespread diseases of mankind - bronchial asthma. The reader will learn what bronchial asthma is and why it occurs; how is this disease diagnosed; what complications are there and how they can be recognized; what modern methods of prevention and treatment of bronchial asthma exist; how to independently monitor the effectiveness of treatment at home. It contains the most reliable and up-to-date information that corresponds to the authoritative recommendations of foreign and domestic medical associations and verified by the author’s many years of experience.