Acute renal failure can be deadly and need immediate medical attention. Acute renal failure, on the other hand, may be reversible. If you are generally healthy, you may be able to regain normal or almost normal kidney function. Doctors often call this syndrome acute reversible renal failure. Sometimes it is called acute intermittent renal failure because the damaged part of your kidney will temporarily stop working and then start back up again. During a period of acute illness such as viral pneumonia, diabetes requiring insulin treatment, or leptospirosis (a disease caused by bacteria found in animal urine that can cause severe symptoms including kidney damage), the kidneys may become injured. This can lead to acute renal failure. However, even if you do not have any apparent risk factors for developing acute renal failure, it may still happen for no known reason. These cases are called idiopathic or intrinsic renal failure. The good news is that most cases of acute reversible renal failure do get better over time. The doctor will likely monitor your kidney function during your recovery period to make sure it does not get worse. If it gets better before other treatments have been tried, there is no need to worry about permanent damage having occurred. But if acute renal failure goes on for more than two weeks, it becomes harder to recover from. There are several things that can be done to help patients recover from acute renal failure.