Why is the pain from kidney stones greater at night?
In response to the above enquiry.
It has to do with posture and body weight.
Whales when beached die from their own weight. Their body mass crushes themselves to death.
When a person stands, the kidney stones are lodged in a position where they have formed. They do not press against the tissue as much and they can move about.
When a person sleeps, the body is supported by the bed. The body weight presses the tissue against the kidney stones and the kidney stones are “pinned down” in one place tightly against the tissue.
The feeling is somewhat like stepping on a pebble with a bare foot.