"Alzheimer" redirects here. For other uses, see Alzheimer (disambiguation). Alzheimer's disease (AD) is a neurodegenerative disease characterized by progressive cognitive deterioration together with declining activities of daily living and neuropsychiatric symptoms or behavioral changes. It is the most common cause of dementia. The most striking early symptom is memory loss (amnesia), which usually manifests as minor forgetfulness that becomes steadily more pronounced with illness progre ...
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Alzheimer's Disease Organizations