The cause of Alzheimer's disease is poorly understood. Although the speed of progression can vary, the typical life expectancy following diagnosis is three to nine years. Gradually, bodily functions are lost, ultimately leading to death. As a person's condition declines, they often withdraw from family and society. As the disease advances, symptoms can include problems with language, disorientation (including easily getting lost), mood swings, loss of motivation, self-neglect, and behavioral issues. The most common early symptom is difficulty in remembering recent events. It is the cause of 60–70% of cases of dementia. Īcetylcholinesterase inhibitors, NMDA receptor antagonists (small benefit) Īlzheimer's disease ( AD) is a neurodegenerative disease that usually starts slowly and progressively worsens. Normal brain aging, Lewy body dementia, Trisomy 21.

Genetics, head injuries, depression, hypertension īased on symptoms and cognitive testing after ruling out other possible causes Memory loss, problems with language, disorientation, mood swings ĭehydration and pneumonia in the terminal stage

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