Both hypotension and hypertension have been implicated in the production of cerebral ischemia and infarction. Although cerebral blood flow in the normal person is relatively independent of the systemic blood pressure down to levels of 50 to 60 mm. of mercury, it has been suggested that a lesser drop in blood pressure may produce cerebral … Read more
Neuropathology is called the study of disease of nervous system tissue.The brain is exquisitely dependent on its oxygen supply. There is no reserve of oxygen in cerebral tissue to sustain cerebral metabolism during periods of reduced or absent cerebral blood flow. When the brain is acutely and completely deprived of oxygen generally or locally, the … Read more
Autonomic Failure is an uncommon disorder first clearly described by Bradbury and Eggleston in 1925 as idiopathic orthostatic hypotension; it has been more recently emphasized as including more generalized autonomic and nervous system defects. The cause is unknown and the course progressive, disability or death usually occurring within five to ten years after onset. Pathology and … Read more
Spasmodic torticollis has variably been described as a psychogenic disorder, a fragment of dystonia musculorum deformans, a compensatory postural defect in persons with congenital ocular muscle imbalance or defects of the cervical spine or musculature. In some instances it has occurred as part of a wide spectrum of extrapyramidal disorders following encephalitis lethargica. There is … Read more
Torsion Dystonia is a rare disease characterized by inter sustained torsion spasms of the musculature w resultant marked abnormalities of bodily postu. The dystonic movements may involve any or of the musculature, but have a predilection the trunk and shoulder and pelvic girdles. Though dystonic movements occur with hep a lenticular degeneration, postencephalitic Parson’s, and tumors … Read more
Benign Hereditary chorea is a progressive degenerative disease of the basal ganglia and cerebral cortex, beginning in adult life and characterized by choreiform movements and mental deterioration. The inheritance of the disease is based on a single dominant autosomal gene. It may be transmitted by either sex, and both sexes are affected in equal numbers. … Read more
