Traumatic neurosis is a nervous disease following injury, in which there is no demonstrable structural lesion of the nervous system. The symptoms are much like those of the common functional diseases of the nervous system, and may be spoken of as traumatic hysteria or traumatic neurasthenia. Commonly, however, we find symptoms of both of these disorders in the same patient and not rarely the clinical picture may not be that of either of them. Litigation is a frequent complication which materially affects the clinical history. It, not rarely, warps the judgment of the physician, and may doubly influence the patient, the many attendant conditions disastrously affecting his nervous system, while the money dangling over his head leads him, consciously or unconsciously, to distort his symptoms. The following cases are typical of a common form of traumatic neurosis, and a long period of observation gives special value to their study. I