Patient with dementia crawling around on the floor. Anyone else experience this?

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Real life examples:

Parkinsons: yes. When you cannot get your brain to tell your legs to move forward, crawling makes sense if you are stuck, or in too much pain.  Observed behavior.

Psychotic break with reality: a patient was crawling on her hands and knees along the walls in the corridors. The psyche nurse told her to stop it, and she did. (as reported by the patient when recovered.)

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I think Hugemom is right. There probably is a reason that makes sense to him. If he is not distressed (thinks he is trying to escape an enemy in the jungle), isn't hurting himself or others, it may not be important to discover why he is doing it. I would report it to his doctor, just as a change in behaviors to go into his file.

Just curious. Does Dad act out his dreams? Has he been diagnosed with REM Behavior Disorder?

There is no rhyme or reason to why dementia patients do or say what they do. It makes sense to them, but to no one else. As long as Dad isn’t hurting himself or others, let him crawl around to his heart’s delight.