Why do dementia patients tend to sleep a lot?
Dementia patients often reverse their sleep patterns entirely, staying awake all night and sleeping all day. Sleeping more and more is a typical symptom of dementia in later stages. The damage to a person’s brain gets more severe as the disease progresses, and as a result, they gradually become weaker. It may be unpleasant for the family and friends, who may get worried that something is wrong.
Nobody knows why dementia disrupts sleep habits. It’s possible that some people’s internal ‘biological clock,’ which determines what time it is, is broken, causing them to feel tired at the wrong time of day. Certain parts of the brain determine whether or not we stay up, and if they get damaged, they may stop working flawlessly.