Creutzfeldt-Jakob disease, a viral infection leads to rapid and progressive dementia.

氏病，病毒感染会导致迅速和渐进性痴呆。

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Rapidly progressive dementia was the main foremost symptom, accounting for 36.81% in the CJD patients.

快速进行性痴呆为最常见的首发症状，占全部诊断病例的36.81%。

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Rapidly progressive dementia(RPD) is a kind of dementia syndrome which has a much more rapid course than other dementia caused by neural degenerative diseases.

迅速进展性痴呆是一类进展快速的痴呆综合征，在起病数周至数月内出现智能减退达严重程度。

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But the cases of CTE have shown this progressive, dementia-like array in players well in advance of a typical dementia diagnosis, which typically occurs when people are in their 70s or 80s.

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In a study published last year in the journal Cortex, Dr. Rankin and her colleagues studied the ability to detect sarcasm in 102 patients who had been diagnosed with four progressive diseases that lead to memory loss: frontotemporal dementia, Alzheimer's disease, progressive supranuclear palsy and vascular-cognitive impairment.

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However, the Boston study showed this progressive, tau protein array in football players much too young for a dementia diagnosis, which typically occurs in people in their 70s or 80s.

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