Even in this stage, the impaired person can keep on enjoying many activities. To do this, care has to be managed well, and any other health or emotional problems have to be treated promptly. To assure this goal, you will need to keep increasing the network of people and services that help you to provide care. The task of caregiving may well expand beyond the ability of any one person. In the late stage of Alzheimer's disease, patients may be able to carry out activities, but they lack the mental skills to do them with a clear purpose.
Patients often become severely disoriented , losing touch with the world more and more.
The impaired person may become ever more involved in delusions. Late in the disease there is also likely to be a flattening of expression. You may not be able to tell whether the person is feeling happy or sad, angry or frightened. You may wonder if the person is sensing anything at all. Even the very impaired person may still be able to experience pleasure and pain.