My husband has vascular dementia and is legally blind - he jumped out of bed (we have a door in the bedroom to the back garden), opened the door, and went outside at 3 AM, waking me up. When he came back in, I asked what was going on. He stated the TV was on (not on), and he fell asleep instantly. He also urinated outside. It appears to be a hallucination - no new meds, no unusual stress. He also moves his legs at night like he is running, which happens regularly. He is aware of his dementia getting worse.