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Dementia is a syndrome associated with many neurodegenerative diseases, characterized by a general decline in cognitive abilities that affects a person's ability to perform everyday activities. This typically involves problems with memory, thinking, behavior, and motor control. [ 10]
Alzheimer's disease ( AD) is a neurodegenerative disease that usually starts slowly and progressively worsens, [ 2] and is the cause of 60–70% of cases of dementia. [ 2][ 15] The most common early symptom is difficulty in remembering recent events. [ 1] As the disease advances, symptoms can include problems with language, disorientation ...
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.
Dementia stage 3: Mild cognitive decline. When memory and cognitive problems become more regular, as well as noticeable to caregivers and family members, a person is said to be suffering from mild ...
Alzheimer's is the leading cause of dementia, which involves the loss of memory, language, problem-solving and other cognitive abilities severe enough to interfere with daily life, according to ...
Dementia praecox (meaning a "premature dementia" or "precocious madness") is a disused psychiatric diagnosis that originally designated a chronic, deteriorating psychotic disorder characterized by rapid cognitive disintegration, usually beginning in the late teens or early adulthood. Over the years, the term dementia praecox was gradually ...
Frontotemporal dementia is an early onset disorder that mostly occurs between the ages of 45 and 65, [ 13] but can begin earlier, and in 20–25% of cases onset is later. [ 11][ 14] Men and women appear to be equally affected. [ 15] It is the most common early presenting dementia. [ 16]
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 ...