text:  Alzheimer's is a form of dementia. Dementia is like the umbrella. You could have vascular dementia. You could have dementia from other neurological conditions. But Alzheimer's is an accelerated form of dementia that usually happens in the 6th to 7th decade of life and usually accelerates to a very bad situation after 8 to 10 years. So it's an accelerated form of dementia.