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  • Alzheimer's Disease is a progressive, neurodegenerative disease characterized by loss of function and death of nerve cells in several areas of the brain leading to loss of cognitive function such as memory and language.
  • Alzheimer's disease, also known as Alzheimer disease, or just Alzheimer's, accounts for 60% to 70% of cases of dementia. It is a chronic neurodegenerative disease that usually starts slowly and gets worse over time. The most common early symptom is difficulty in remembering recent events. As the disease advances, symptoms can include: problems with language, easily getting lost, mood swings, loss of motivation, not coping with self care and normal daily activities, and behavioural issues. As a person's condition declines they often withdraw from family and society. Gradually, bodily functions are lost, ultimately leading to death. Although the speed of progression can vary, the average life expectancy following diagnosis is three to nine years. The cause of Alzheimer's disease is poorly understood. About 70% of the risk is believed to be genetic with many genes usually involved. Other risk factors include: a history of head injuries, depression or hypertension. The disease process is associated with plaques and tangles in the brain.

Freebase Commons Medicine /medicine

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