The textbook “Sexology and sexopathology” describes the theoretical and practical foundations of sexology, sexopathology, a modern view of sexual orientation and paraphilia, basic methods of diagnosis and treatment of sexological diseases of men and women, principles of forensic sexology. The textbook will be useful for medical university students, but it can be used by interns, sexopathologists, sexologists, urologists, gynecologists, psychotherapists, general practitioners and other specialties, as well as psychologists, sociologists, teachers, lawyers, etc.