Abstract
This article focuses on the elderly patient with a progressive and irreversible dementia, most often of the Alzheimer type. However dementia, the decline in mental function from a previous state, can occur in all ages. For example, if Alzheimer's disease is the dementia of the elderly, increasingly AIDS is the dementia of many who are relatively young. I will not present the major ethical issues relating to dementia care following the progression of disease from the mild to the severe stages, for I have done this elsewhere. Among the issues included are: presymptomatic testing, both psychological and genetic; responsible diag- nostic disclosure and use of support groups; restrictions on driving and other activities; preemptive assisted suicide; advance directives for research and treatment; quality of life in relation to the use of life-extending technologies; and euthanasia