Dementia is a collection of symptoms that include memory loss and problems with thinking. There are a number of causes of dementia, of which Alzheimer's disease is the most common.
What is the difference Alzheimer's and Dementia?
Other causes of damage to the brain that result in dementia include a lack of oxygen to the brain as occurs during a stroke, called vascular dementia, and when abnormal structures called Lewy bodies develop inside brain cells resulting in the type of dementia called 'dementia with Lewy bodies'.
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