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Alzheimer's Disease FAQs (cont.)

What are symptoms of Alzheimer's disease?

While Alzheimer's disease progresses at different rates in different people, three general stages of Alzheimer's disease have been described.

  • In the early stage (pre-clinical), symptoms of Alzheimer's disease are subtle. The main symptom is memory loss.
  • In the middle, or intermediate, stage (mild cognitive impairment), individuals begin to lose their ability to think and reason clearly, judge situations, communicate, understand new information, and take care of themselves.
  • As the disease progresses to the late stage (Alzheimer's' disease), individuals may experience changes in personality and behavior, anxiety, agitation, disorientation, paranoia, severe memory loss, loss of mobility, delusions, and hallucinations.
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