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Dementia in the elderly was once called senile dementia or senility, and viewed as a normal and somewhat inevitable aspect of aging. [ 291 ] [ 292 ] By 1913–20 the term dementia praecox was introduced to suggest the development of senile-type dementia at a younger age.
The term senile dementia of the Alzheimer type (SDAT) was used for a time to describe the condition in those over 65, with classical Alzheimer's disease being used to describe those who were younger. Eventually, the term Alzheimer's disease was formally adopted in medical nomenclature to describe individuals of all ages with a characteristic ...
Amyloid beta immunostaining showing amyloid plaques (brown). Amyloid plaques (also known as neuritic plaques, amyloid beta plaques or senile plaques) are extracellular deposits of amyloid beta (Aβ) protein that present mainly in the grey matter of the brain.
The term young onset dementia is becoming more widely used to avoid the potential confusion between early onset dementia and early stage dementia This term is now used as presenile dementia which is a historical term of people diagnosed with dementia from a younger age of 51 years old. This is caused by an atypical arterioclerosis of the brain.
Senile dementia, fronto-temporal dementia, and vascular dementia; Pick's disease, causes progressive destruction of nerve cells in the brain; Huntington's disease, and other genetic disorders that cause build-up of toxic levels of proteins in neurons; Leukodystrophies, such as Krabbe disease, which destroy the myelin sheath that protects axons
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 ...