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Vascular dementia can be caused by ischemic or hemorrhagic infarcts affecting multiple brain areas, including the anterior cerebral artery territory, the parietal lobes, or the cingulate gyrus. [5] On rare occasion, infarcts in the hippocampus or thalamus are the cause of dementia. [ 12 ]
Binswanger's disease, also known as subcortical leukoencephalopathy and subcortical arteriosclerotic encephalopathy, [1] is a form of small-vessel vascular dementia caused by damage to the white brain matter. [2] White matter atrophy can be caused by many circumstances including chronic hypertension as well as old age. [3]
A person can show one or more of these symptoms during a stroke. Decreased consciousness is more uncommon than in stroke due to intracerebral hemorrhage, but may be present when there is infarctions in more than one part of the brain or in the brain stem. [13] Symptoms of cerebral infarction can help determine which parts of the brain are affected.
That’s because dementia first affects the part of the brain that’s responsible for short-term memories, as opposed to long-term memories, said Newhouse.
It is one of the most common causes of disability among the elderly but can develop before the age of 65 when it is known as early-onset dementia or presenile dementia. [ 283 ] [ 284 ] Less than 1% of those with Alzheimer's have gene mutations that cause a much earlier development of the disease, around the age of 45, known as early-onset ...
Other common causes of chronic organic brain syndrome sometimes listed are the various types of dementia, which result from permanent brain damage due to strokes, [7] Alzheimer's disease, or other damaging causes which are irreversible. Amnestic pertains to amnesia and is the impairment in ability to learn or recall new information, or recall ...
Heart problems can increase dementia risk, but a new study suggests that heparin, a common anticoagulant administered via injection, may help delay Alzheimer’s onset.
Signs and symptoms are classified into three groups based on the affected functions of the frontal and temporal lobes: [8] These are behavioural variant frontotemporal dementia, semantic dementia, and progressive nonfluent aphasia. An overlap between symptoms can occur as the disease progresses and spreads through the brain regions.
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