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Dementia with Lewy bodies (DLB) is a type of dementia, a group of diseases involving progressive neurodegeneration of the central nervous system. [11] It is one of the two Lewy body dementias, along with Parkinson's disease dementia. [12] Dementia with Lewy bodies can be classified in other ways.
Generally, dementia with Lewy bodies is distinguished from Parkinson's disease dementia by the time frame in which dementia symptoms appear relative to parkinsonian symptoms and is diagnosed when cognitive symptoms begin before or at the same time as parkinsonism. Parkinson's disease dementia is the diagnosis when Parkinson's disease is already ...
The Nun Study of Aging and Alzheimer's Disease is a continuing longitudinal study, begun in 1986, to examine the onset of Alzheimer's disease. [1] [2] David Snowdon, an Epidemiologist and the founding Nun Study investigator, started the Nun Study at the University of Minnesota, later transferring the study to the University of Kentucky in 1990. [3]
The normal life expectancy for 60 to 70 years old is 23 to 15 years; for 90 years old it is 4.5 years. [219] Following AD diagnosis it ranges from 7 to 10 years for those in their 60s and early 70s (a loss of 13 to 8 years), to only about 3 years or less (a loss of 1.5 years) for those in their 90s.
The dementia [2] is more severe in patients with early onset of Huntington's disease. Parkinson's disease is characterised by features of dementia in older age. [ 3 ] [ 4 ] The adult type " leukodystrophy " also causes subcortical dementia with prominent frontal lobe features.
Some 4% of U.S. adults aged 65 and older say they have been diagnosed with dementia, a rate that reached 13% for those at least 85-years old, according to a report of a national survey released on ...
Binswanger's disease is a type of subcortical vascular dementia caused by white matter atrophy to the brain. However, white matter atrophy alone is not sufficient for this disease; evidence of subcortical dementia is also necessary.
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