Can anyone tell something about this old man

I have seen this old man wandering in areas near Summerhill and Chaura Maidan. On the way to University, clicked these photos. I guess, he suffers from some sort of psychological trouble. But,everyday, he seems to be following a strict routine. There are a few others like him. Why is that these people are left to wander on roads by the state when they need it most? I guess, there must be some official provision for such guys. Is there?

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