Your kidneys filter waste and extra fluid from your blood, help control blood pressure, and support important body functions. Kidney problems can sometimes develop quietly, but certain changes may be warning signs that deserve attention.
23 Possible Warning Signs of Kidney Problems
- Changes in urination (more or less frequent than usual)
- Waking up often at night to urinate
- Foamy or bubbly urine (possible sign of protein leakage)
- Blood in the urine
- Dark, cloudy, or unusual-smelling urine
- Swelling in the feet, ankles, hands, or around the eyes
- Persistent fatigue or low energy
- Trouble concentrating or feeling confused
- Nausea or vomiting
- Loss of appetite
- Unexplained weight changes
- Dry, itchy skin
- Muscle cramps, especially in the legs
- Shortness of breath (fluid buildup can contribute)
- High blood pressure that is difficult to control
- Back or side pain near the kidney area
- Feeling unusually cold
- Bad breath or a metallic taste in the mouth
- Sleep problems
- Pale skin or signs of anemia
- Difficulty managing blood sugar (especially with diabetes)
- Recurring urinary tract infections
- A general feeling that something is “off” along with other symptoms
