8 Symptoms of Kidney Failure You Shouldn't Ignore

Kidney failure, or end-stage renal disease (ESRD), occurs when the kidneys can no longer filter waste effectively. At this stage, kidney function drops below 10% of normal, leading to dangerous toxin buildup in the body. The condition develops gradually, often progressing through multiple phases before diagnosis. People with ESRD require dialysis or a kidney transplant to survive, so recognizing symptoms early is critical.

1. Decreased Urine Output

The kidneys’ main job is to filter waste and remove it from the body through urine. As kidney function declines, this process slows or stops entirely. Many people with ESRD notice a significant drop in urine production; in some cases, urination may stop altogether. This is a key warning sign of late-stage kidney failure—especially in individuals with a history of kidney disease—and should prompt immediate medical attention.