| NOUN | state | presenile dementia | dementia with onset before the age of 65 |
|---|
| Meaning | dementia with onset before the age of 65. | |
|---|---|---|
| Narrower | Alzheimer's disease, Alzheimer's, Alzheimers | A progressive form of presenile dementia that is similar to senile dementia except that it usually starts in the 40s or 50s |
| Pick's disease | A progressive form of presenile dementia found most often in middle-aged and elderly women and characterized by degeneration of the frontal and temporal lobes with loss of intellectual ability and transitory aphasia | |
| Broader | dementia, dementedness | mental deterioration of organic or functional origin |
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