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[1] [2] [3] Semantic dementia is a disorder of semantic memory that causes patients to lose the ability to match words or images to their meanings. [4] However, it is fairly rare for patients with semantic dementia to develop category specific impairments, though there have been documented cases of it occurring. [5]
Children with childhood dementias suffer severe sleep disturbances, movement disorders (e.g. muscle spasms, tremors), deterioration of communication skills, loss of vision and hearing, mood disorders, psychosis (including hallucinations and delusions) and incontinence. [3] This situation can cause many emotional changes for parents and children.
Semantic dementia is a semantic memory disorder that causes patients to lose the ability to match words or images to their meanings. [54] It is fairly rare for patients with semantic dementia to develop category specific impairments, though there have been documented cases of it occurring.
There is a difference between cortical and subcortical dementia. Cortical dementia is atrophy of the cortex which affects ‘higher’ functions such as memory, language, and semantic knowledge whereas subcortical dementia affects mental manipulation, forgetfulness, and personality/emotional changes.
Semantic amnesia affects semantic memory and primarily expresses itself in the form of problems with language use and acquisition. [48] Semantic amnesia can lead to dementia. [49] Pseudodementia (otherwise known as depression-related cognitive dysfunction) is a condition where mental cognition can be temporarily decreased. The term ...
The three clinical subtypes of frontotemporal lobar degeneration, frontotemporal dementia, semantic dementia and progressive nonfluent aphasia, are characterized by impairments in specific neural networks. [17] The first subtype, frontotemporal dementia, mainly affects a frontomedian network and impairs social cognition.
Semantic amnesia progressively evolves into dementia. Semantic dementia , a degenerative disorder, causes a progressive loss of semantic and conceptual knowledge. The region of the brain associated with semantic dementia is the left anterior temporal lobe [ 7 ] Patients experience difficulties in verbal identification of stimuli and have poor ...
FTD is traditionally difficult to diagnose owing to the diverse nature of the associated symptoms. 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 ...
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