Renal kidney failure is a serious condition in which the kidneys lose their ability to filter waste products, remove excess fluid and maintain the body’s electrolyte balance. Many people search for “renal kidney failure” after abnormal creatinine or eGFR test results, swelling, reduced urine output or a diagnosis of kidney disease. Understanding the cause and stage of kidney failure is important because early treatment can often slow progression, manage complications and improve quality of life.

Kidney failure may occur suddenly (acute renal failure) or develop gradually over months or years (chronic kidney disease progressing to kidney failure). Timely evaluation by a nephrologist is essential because treatment depends on the underlying cause, kidney function and the presence of complications.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides comprehensive evaluation and treatment for acute kidney injury, chronic kidney disease (CKD), advanced renal failure, dialysis management and kidney transplant care.

What Is Renal Kidney Failure?

Renal kidney failure means that the kidneys can no longer perform their normal functions adequately.

Healthy kidneys help:

• Filter waste products from the blood

• Remove excess water

• Regulate blood pressure

• Maintain sodium and potassium balance

• Support red blood cell production

• Maintain bone and mineral health

When kidney function declines significantly, waste products and excess fluid begin to accumulate in the body.

Acute vs Chronic Renal Kidney Failure

Acute Renal Failure

Acute kidney injury develops rapidly over hours or days.

Common causes include:

• Severe dehydration

• Infection (sepsis)

• Low blood pressure

• Kidney infections

• Certain medications

• Urinary obstruction

• Kidney inflammation

Acute kidney failure may be reversible if treated promptly.

Chronic Renal Failure

Chronic kidney failure develops gradually over time and is usually associated with chronic kidney disease.

Common causes include:

• Diabetes

• High blood pressure

• Glomerulonephritis

• Polycystic kidney disease

• Recurrent kidney infections

• Long-term kidney damage from other conditions

Chronic kidney failure usually requires long-term management.

Symptoms of Renal Kidney Failure

Symptoms often become more noticeable as kidney function declines.

Common symptoms include:

• Swelling of the feet and ankles

• Puffiness around the eyes

• Fatigue

• Weakness

• Reduced appetite

• Nausea

• Vomiting

• Itching

• Frequent nighttime urination

• Foamy urine

• Blood in urine

• Muscle cramps

• Shortness of breath

• Difficulty concentrating

• Reduced urine output in some patients

Early kidney disease may cause few or no symptoms.

Stages of Chronic Kidney Failure

Kidney function is commonly assessed using eGFR (estimated glomerular filtration rate).