. A treatise on mental diseases. lar weakness accompany the psychical indications. To these areadded in typical cases the scanning speech, the intention tremorand nystagmus. The affection may, in atypical cases, stronglysimulate the demented form of general paralysis, but delusions andprofound disturbance of the faculties are lacking. Dementia following Brain Tumours.—The degree of mental dis-turbance resulting from new growths within the cranial cavity isvery variable. The majority of tumours cause an increase of intra-cranial pressure, and thus give rise to disturbances of the mentalpowers,
. A treatise on mental diseases. lar weakness accompany the psychical indications. To these areadded in typical cases the scanning speech, the intention tremorand nystagmus. The affection may, in atypical cases, stronglysimulate the demented form of general paralysis, but delusions andprofound disturbance of the faculties are lacking. Dementia following Brain Tumours.—The degree of mental dis-turbance resulting from new growths within the cranial cavity isvery variable. The majority of tumours cause an increase of intra-cranial pressure, and thus give rise to disturbances of the mentalpowers, manifested more especially by intellectual dulness and obtuse- PSYCHOSES FOLLOWING ORGANIC DISEASE 245 ness. The attention of these patients is often difficult to hold, andthey very quickly relapse into a half stuporous state. Intensecephalalgia, uncontrollable by any of the ordinary therapeutic meas-ures, is the most frequent indication. The motor symptoms varyaccording to the locality of the tumour. There may be paralysis of. Fio. 23.—Traumatic Dementia. The patient was struck by an engine, the principalinjury being to the skull. A portion of the frontal and parietal bones, together witha part of the brain substance, were removed by a surgeon. After recovering from theimmediate effects of the operation the man became maniacal, and had repeated epilep-tic seizures. Both affections slowly subsided, and left him profoundly demented andincapable of speaking more than two or three words. There is no paralysis of thelimbs, though after the administration of an hypnotic the left limb is dragged. Overboth fronto-parietal regions there arc large lacuna; in the bony tissue. The one on theright side is partly filled in by a fibrous material. This depression measures 9 x 4J^centimetres. That on the left side is 6 x 4 centimetres, and under the skin the pulsa-tions of the brain can be both seen and felt. one limb or of the entire half of the body, with convulsions, epi-leptic seizures
Size: 1479px × 1690px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, bookdecade1900, booksubjectmentaldisorders
