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Answer: Ischemic white matter disease refers to small blood vessels in the brain that are clogging up a bit. This is usually not a serious condition unless the amount of small vessel disease gets to a moderate or severe degree.It is often caused by high blood pressure, diabetes, high cholesterol, or smoking.nswer: Ischemic white matter disease refers to small blood vessels in the brain that are clogging up a bit. This is usually not a serious condition unless the amount of small vessel disease gets to a moderate or severe degree.
gray areas of brain and spinal cord made up primarily of cell bodies and dendrites of nerve cells rather than myelinated axons. White matter or substance is the tissue composed primarily of myelinated, or medullated, fibers. The bodies of the nerve cells are centered in the gray matter. In the brain the gray matter may be external to white matter, e.g. cerebellum, or central to it, e.g. cerebrum. The cerebral cortex is composed of gray matter and there are some deep-seated nuclei too.