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Q. What is Alzheimer's Disease?

by Christine Kennard
for About.com

Updated: May 25, 2006

About.com Health's Disease and Condition content is reviewed by the Medical Review Board

A. Alzheimer’s disease, the most common form of dementia that affects millions of people world wide. Alzheimer's is a progressive brain disorder in which brain tissue deteriorates and dies. When examined at autopsy the brain shows abnormal fibers that appear to be tangles of brain tissue filaments (neurofibrillary tangles) and senile plaques (patches of degenerative nerve endings). This damage is believed to cause disruption to transmission of impulses amongst brain cells. It is this damage that is thought to produce the symptoms of the disease.

Symptoms inclde:
Memory loss, deteriorating language skills, personality changes, behavioral changes, increasing inability to recognise people, places and things, ability to carry out tasks are severly affected.

Alzheimer's disease affects people in different ways so it can be difficult to diagnose in the early stages. Unfortunately eventually most people with Alzheimer’s are not able to care for themselves at all and they become bed bound.

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