The reference book describes the main clinical manifestations, diagnostic signs, and principles of treatment of diseases that practitioners constantly encounter. Diseases of the circulatory, respiratory, digestive organs, rheumatic diseases, kidney and urinary tract diseases, blood systems, endocrine and metabolic diseases, occupational diseases, poisoning, infectious, children's, women's, eye, skin and venereal diseases are presented; contains information about nervous and mental diseases, sexual disorders, surgical pathology and diseases of the ear, nose and throat, teeth and oral cavity. The book is intended for doctors of all specialties, and will also be useful to a wide range of readers.