Up to 40% of people with Alzheimer’s have depression. Depression is also seen with other types of depression. Although it is possible to live with dementia it is not hard to see, how having it because of it’s impact on everyday life (see lent prompt one for symptoms), could make someone depressed. Research is ongoing as to whether those who have suffered depression are at greater risk of developing depression,
It can be difficult to diagnose depression in someone with dementia as some of the symptoms such as apathy are symptoms of both depression and dementia.
Anti depressants can help the depression symptoms.