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Posterior cortical atrophy (PCA), also called Benson's syndrome, is a rare form of dementia which is considered a visual variant or an atypical variant of Alzheimer's disease (AD). [ 1 ] [ 2 ] [ 3 ] The disease causes atrophy of the posterior part of the cerebral cortex , resulting in the progressive disruption of complex visual processing . [ 4 ]
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.
Lewy body dementia (LBD) is an umbrella term for two similar and common subtypes of dementia: [1] dementia with Lewy bodies (DLB) and Parkinson's disease dementia (PDD).
Lewy bodies are the inclusion bodies – abnormal aggregations of protein – that develop inside neurons affected by Parkinson's disease (PD), the Lewy body dementias (Parkinson's disease dementia and dementia with Lewy bodies (DLB)), and some other disorders.
Childhood dementia is very often diagnosed late, misdiagnosed, or not diagnosed at all. [9] A correct diagnosis happens, on average, 2 years or more after symptoms become apparent. Additionally, children affected by childhood dementia are often misdiagnosed with: Autism [16] [9] [17] Developmental or intellectual delay [16] [9] ADHD [9] Others [9]
Many diseases that cause cerebral atrophy are associated with dementia, seizures, and a group of language disorders called the aphasias. Dementia is characterized by a progressive impairment of memory and intellectual function that is severe enough to interfere with social and work skills. Memory, orientation, abstraction, ability to learn ...
Fritz Heinrich Lewy (/ ˈ l ɛ v i /; January 28, 1885 – October 5, 1950), [1] known in his later years as Frederic Henry Lewey, was a German-born American neurologist.He is best known for the discovery of Lewy bodies, which are a characteristic indicator of Parkinson's disease and dementia with Lewy bodies.
Parkinson's disease dementia can only be definitively diagnosed after death with an autopsy of the brain. [6] The 2017 Fourth Consensus Report established diagnostic criteria for PDD and DLB. [ 9 ] The diagnostic criteria are the same for both conditions, except that PDD is distinguished from DLB by the time frame in which dementia symptoms ...