(Very) acute renal failure
My character, for all intents and purposes, has no kidneys. He is kept alive by constant dialysis. One day, he stops it abruptly and cannot get medical treatment. He is also in a desert climate, and is exposed to high temperatures (which, for example, would exacerbate a fever). What happens?
I have googled "renal failure", "kidney failure" and the like to death, to no avail. The important thing here is that he's going from full renal function (by means of constant dialysis) to no renal function whatsoever.
Thanks so much.