An increased general interest in psychology and psychotherapy has been one of the minor consequences of the war. This is shown to some extent in the large output during recent months of books upon the psychogenic origin of neurasthenia and functional nervous disorder. In the present work the author has stated the psychological factors underlying those forms of nervous reaction, which form the borderline disorders known as hysteria, neurasthenia, psychasthenia and the compulsion neuroses. He has not attempted to give a clinical picture of these reactions, but more especially his object has been to indicate the psychological mechanism of their causation and the principles concerned in their treatment by psychotherapy. Dr. Brown has brought to his task a well-equipped mind, and his book is the outcome of a large practical experience obtained both during the war and subsequently. This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally-enhance the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. Tags: patient dream psycho mind theory consciousness symptom emotion freud psychology memories mental psychotherapy unconscious memory physical time form system emotional