in this stage is two to three years; (7) severe Alzheimer’s disease. Person’s ability to move about independently, walk, speak, communicate, and understand are all lost during this stage. He or she may become incontinent of urine and stool and need assistance in all basic self care activities. Nursing home placement is almost always necessary because of the heavy care demands. Persons generally die approximately two years after onset of this stage, although some may survive for as long as seven years