The textbook "Psychiatry and Narcology" was developed by the staff of the Department of Psychiatry and Medical Psychology of MMA named after THEM. Sechenov. It includes general and private issues of psychiatry and narcology. In accordance with the official program on psychiatry and narcology for medical universities, the book presents the general theoretical foundations of these disciplines, modern information on classification, etiology, diagnosis, prevention, treatment of addiction diseases, mental illness and disorders, as well as issues of organizing psychiatric and medical care.