As dementia progresses, the symptoms first experienced in the early stages of the dementia generally worsen. The rate of decline is different for each person.
Dementia sufferers may be severely impaired in solving problems, and their social judgment is usually also impaired. They cannot usually function outside their own home, and generally should not be left alone. They may be able to do simple chores around the house but not much else, and begin to require assistance for personal care and hygiene other than simple reminders.