Acute pre-renal kidney failure- This occurs due to reduced blood flow to the kidneys that reduces the ability of kidneys to filter toxins. Acute intrinsic kidney failure- It happens due to physical impact on kidneys caused by an accident. The causes of this type of failure also include toxin overload and ischemia. Chronic pre-renal kidney failure- Low amount of blood flow to the kidneys for a prolonged period of time causes this type of kidney failure. Chronic intrinsic kidney failure- This happens due to intrinsic kidney disease that causes severe bleeding or a lack of oxygen. Chronic post-renal kidney failure- Long-term blockage of the urinary tract causes this type of renal failure. Click here to Know more about Kidney faliure and Kidney Dialysis Treatment in Hyderabad