The book "Epilepsy, Hysteria and Neurasthenia: Their Causes, Symptoms and Treatment" by the famous author Isaac George Briggs is a study devoted to the study of three important mental disorders. The book analyzes in detail the causes, symptoms and methods of treatment of epilepsy, hysteria and neurasthenia. The author considers these diseases as complex medical problems that require a complex approach to diagnosis and therapy. Briggs reveals in detail the psychological and physiological mechanisms that underlie these diseases, providing examples of clinical cases and scientific facts. The book contains comprehensive information that can be useful to both medical professionals and general readers interested in mental health and treatment. The author aims not only to describe the symptoms of these disorders, but also to emphasize the importance of early diagnosis and competent treatment to improve the quality of life of patients.