How many and what are the stages of Alzheimer's and dementia?

The Alzheimer's Association generally considers that there are seven stages of Alzheimer's. However, people don't go straight from one stage to the other, Most people go back and forth for awhile, and may be stage five in one area and stage six in another. For good, basic information on this, try www.alz.org. They can give you a lot of help.
Please keep in touch,
Carol