I'll never forget the day I was driving to town and saw an elderly woman on the side of the road clutching a sign post and shaking.
She had wandered off from her rest home and was lost and confused. She was at least three blocks from her "home" and crossed at least two busy roads.
I pulled over and went to see if she was okay. She wasn't.
She was able to tell me which rest home she lived at and I took her back.
The rest home's response was one of relative concern. When we walked in the front door, they said "not again", indicating the woman suffered from dementia and was known for this kind of thing.