23 Strange Signs Your Kidneys Might Be in Trouble
The kidneys filter waste from the blood, balance fluids, help control blood pressure, and support healthy red blood cell production. Kidney problems can develop quietly, and symptoms may not appear until kidney function has declined.
Many of the signs below can also have causes unrelated to the kidneys, but persistent or unexplained symptoms should be discussed with a healthcare professional.
1. Changes in Urination
Possible warning signs include:
- Needing to urinate more often, especially at night
- Urinating much less than usual
- Foamy or bubbly urine
- Blood in the urine
- Dark or unusually cloudy urine
2. Swelling in the Feet, Ankles, or Hands
When kidneys struggle to remove excess fluid and salt, fluid may build up and cause swelling (edema).
3. Persistent Fatigue
Kidney disease can contribute to tiredness due to waste buildup or reduced production of a hormone involved in making red blood cells.
4. Trouble Sleeping
Some people with kidney problems experience sleep difficulties, which may be related to itching, discomfort, or changes in body chemistry.
5. Itchy Skin
A buildup of certain waste products or mineral imbalances in advanced kidney disease can contribute to persistent itching.
