What are the different stages of alzheimer's and dementia?

Alzheimer Stages: There are 7 stages; 1.Normal daily functions. 2.Minimal cognitive changes with lapses in memory. 3.Can't recall names, misplaces objects. 4.Forgets recent events or personal details, moody, socially withdrawn. 5.Disoriented to time or place. 6.Reduced awareness of surroundings. can't recognize close family, agitation at night (sundowning).incontinent, wanders. 7.Unresponsive, needs total care.