Increased urination, especially at night
Decreased urine flow
Foamy or bubbly urine, which could indicate protein leakage
2. Fatigue and weakness
The kidneys help produce red blood cells by releasing a hormone called erythropoietin. When kidney function declines, anemia can develop, causing fatigue, weakness, and difficulty concentrating.
3. Swelling (edema)
Water retention due to poor kidney function leads to swelling:
Legs
Hands
Face
Abdomen
4. Persistent back pain
Severe pain under the rib cage or tenderness in the back may be related to untreated urinary tract infections or kidney stones.
5. Unexplained weight loss or loss of appetite
Kidney disease can cause loss of appetite and weight loss due to the buildup of waste products in the blood. You may feel full even if you haven’t eaten much.
