Chronic Kidney Disease Stages

Chronic Kidney Disease stages describe the gradual loss of kidney function over time and are classified into five stages based on the glomerular filtration rate (GFR). Stage 1 shows kidney damage with normal function and few symptoms. Stage 2 involves a mild reduction in kidney performance. Stage 3, divided into 3A and 3B, reflects moderate decline with symptoms such as fatigue and swelling. Stage 4 indicates severe kidney damage requiring close medical care. Stage 5, known as end-stage kidney disease, represents kidney failure and requires dialysis or a kidney transplant for survival.