Alzheimer's disease is a degenerative disorder that attacks the brain and leads to dementia and is one of the most common dementing disorders of old age. Alzheimer's affected nearly 4 million individuals in the U.S. alone. Dementia is a group of symptoms characterized by an insidious decline in intellectual functioning of sufficient severity to interfere with normal daily activities and social relationships. Cognitive ability is the most serious aspect of the loss in intellectual functioning. Dementia of Alzheimer's disease is distinguished from age-associated memory impairment and benign forgetfulness in that it is inevitably marked by progressive, irreversible declines in memory, performance of routine tasks, time and space orientation, language and communication skills, abstract thinking, and the abilities to learn, carry out mathematical calculations, and construct an object with blocks. Alzheimer's disease is also characterized by personality changes and impaired judgment.......
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