Signs of end-stage dementia include inability to respond to the environment, carry on conversations and control movement, explains the Alzheimer's Association. At this stage, patients need help with daily activities, such as going to the bathroom, and they experience eating problems, according to the National Institute on Aging.
Toward the end of life, patients are vulnerable to complications such as pneumonia, and they may require hospitalization, a feeding tube or intravenous treatment, states WebMD. They experience complete memory loss, and they cannot understand geography or time, explains Healthline. Patients at this stage require full-time attention, and most of them are bedridden.