caligo
It is Latin for mental fogginess. That’s it. You could use it to describe it. Maybe it could become a modern word for it, I dunno.
Someone who does not know Latin, whose name is Bob: Hey, what’s Latin for mental fogginess?
Me: Oh, it’s caligo. Anyway, want to go bowling later?
Bob: damn skippy
Me: Oh, it’s caligo. Anyway, want to go bowling later?
Bob: damn skippy