Kidney problems can sometimes develop quietly, but there are warning signs worth paying attention to. Online lists often exaggerate “hidden signs,” so it’s best to look at symptoms that are medically recognized.
Possible signs of kidney trouble include:
- Changes in urination (more or less frequent, especially at night)
- Blood in the urine
- Foamy or unusually bubbly urine (can be a sign of protein leakage)
- Swelling in the feet, ankles, hands, or around the eyes
- Persistent fatigue or weakness
- Trouble concentrating or feeling confused
- Loss of appetite
- Nausea or vomiting
- Itchy skin
- Dry or darker skin changes
- Muscle cramps
- Shortness of breath (especially if fluid builds up)
- High blood pressure that is difficult to control
- Back or side pain near the kidneys (especially with other symptoms)
- Unexplained weight changes
- Bad breath or a metallic taste in the mouth
- Feeling generally unwell without a clear reason
