What is the prognosis of delirium, dementia, and amnesia?

Updated: Sep 19, 2018
  • Author: Richard D Shin, MD; Chief Editor: Gil Z Shlamovitz, MD, FACEP  more...
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Delirium is fully reversible in most cases with proper recognition and treatment of the etiology. However, some cases of delirium can last weeks or months and can become chronic.

Dementia is usually insidious and relentlessly progressive. However, about 20-30% of cases are due to reversible causes. On average, patients with Alzheimer disease die within 8 years of onset, with a range of 2-15 years. Younger patients usually have a more fulminant course. Pick disease has a similar course.

Subacute encephalopathy, may be reversible, persistent, or progressive.

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