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Semantic dementia is mainly related to the inferior temporal poles and amygdalae; brain regions that have been discussed in the context of conceptual knowledge, semantic information processing, and social cognition, whereas progressive nonfluent aphasia affects the whole left frontotemporal network for phonological and syntactical processing.
Dementia of the Alzheimer's type, with early onset, without behavioral disturbance: Included only in the DSM-IV-TR. 294.xx: Dementia of the Alzheimer's type, with late onset: Coded 290.xx in the DSM-IV. 290.0: Dementia of the Alzheimer's type, with late onset, uncomplicated: Included only in the DSM-IV. 294.11: Dementia of the Alzheimer's type ...
This term is now reserved only for behavioral variant FTD which shows the presence of the characteristic Pick bodies and Pick cells, [7] [8] which were first described by Alois Alzheimer in 1911. [6] In 1989, Snowden suggested the term semantic dementia to describe the patient with predominant left temporal atrophy and aphasia that Pick ...
Clinically subcortical dementia usually is seen with features like slowness of mental processing, forgetfulness, impaired cognition, lack of initiative-apathy, depressive symptoms (such as anhedonia, negative thoughts, loss of self-esteem and dysphoria), loss of social skills along with extrapyramidal features like tremors and abnormal movements.
SD is a clinically defined syndrome but is associated with predominantly temporal lobe atrophy (left greater than right) and hence is sometimes called temporal variant FTLD (tvFTLD). [7] SD is one of the three variants of primary progressive aphasia (PPA), which results from neurodegenerative disorders such as FTLD or Alzheimer's disease. There ...
It's possible that sundowning in dementia patients is caused by a combination of hormonal changes, brain deterioration or damage that has occurred, environmental factors, disruption to a person's ...
The fifth revision of the Diagnostic and Statistical Manual of Mental Disorders gives Lewy body disease as the causative subtype of dementia with Lewy bodies, and Parkinson's disease as the causative subtype of Parkinson's disease dementia. [10] Dementia with Lewy bodies is marked by the presence of Lewy bodies primarily in the cortical regions ...
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.