[An autopsy case of head injury with a manic-depressive states (author's transl)]

M. M. a man aged 49. He suffered from a head injury at the aged of 41. At that time he lost consciousness for a few minutes and he was diagnosed as a consquassatio cerebri. The sequelaes of his head injury were a change of character and a disturbance of autonomic nerve function. The changes of character were decreased of activity, lie-down for all day, decrease of speech and depressive mode, and occasionally he was ill-humored, restless and irritative. Periodically he became euphoris, talkative and childisch. He had a disturbance of autonomic nerve function which became worse in parallel to the depressive states. We speculated that character changes, such as manic-depressive states and disturbances of autonomic nerve function were due to the bruising of the bilateral orbital surfaces of frontal lobes.