Kidney failure (also called renal failure) is a term used to describe when a person's kidneys stop working properly, or fail. Kidney failure can be divided into two categories: chronic renal failure, and acute renal failure.
Chronic renal failure
Chronic renal failure develops slowly, and there are not many noticeable symptoms at first.
Acute renal failure
Acute renal failure develops in a short time, and symptoms are more noticeable. Symptoms include:
- Urinating less than usual
- Changes in the amount of water in the body
- Electrolyte levels that are not normal
The cause of acute renal failure needs to be found quickly. Dialysis is often needed to prevent permanent damage to the body while the cause is being found.
Acute-on-chronic renal failure
It is possible to have acute renal failure on top of chronic renal failure. This is called "acute-on-chronic renal failure."fr:Insuffisance rénale aiguë