Stage 4 Chronic Kidney Disease is an advanced stage where kidney function is severely reduced, with a glomerular filtration rate between 15 and 29 mL/min. At this stage, the kidneys struggle to remove waste and excess fluids, leading to symptoms such as extreme fatigue, swelling in the legs, ankles, or face, nausea, loss of appetite, and shortness of breath. Blood pressure often becomes difficult to control, and complications like anemia and bone weakness may develop. Treatment focuses on slowing further kidney damage, managing symptoms, following a kidney-friendly diet, and preparing for future options such as dialysis or kidney transplantation.