Chronic renal failure is a medical condition where the kidneys gradually lose their ability to function over time. This condition is also known as chronic kidney disease. Some synonyms for chronic renal failure include end-stage renal disease, kidney failure, renal insufficiency, and chronic kidney failure. These terms are often used interchangeably in medical literature. The diagnosis of chronic renal failure is typically based on laboratory tests that measure kidney function. Treatment options include medications, lifestyle changes, and dialysis or kidney transplantation in severe cases. It is essential to detect chronic renal failure early to prevent irreversible damage to the kidneys.