⚠️ 23 Strange Signs Your Kidneys Might Be in Trouble
The headline is a little misleading: early kidney disease often causes no symptoms at all. In fact, many people don’t know they have chronic kidney disease until it is advanced. Blood and urine tests are much more reliable than trying to diagnose kidney problems from symptoms alone. (NIDDK)
As kidney function declines, possible signs can include:
- Swollen ankles, feet, or legs
- Puffiness around the eyes
- Foamy or unusually bubbly urine
- Blood in the urine
- Urinating more frequently
- Waking frequently to urinate at night
- Producing much less urine
- Persistent tiredness or weakness
- Trouble sleeping
- Difficulty concentrating
- Headaches
- Loss of appetite
- Nausea
- Vomiting
- Unexplained weight loss
- Dry or itchy skin
- Numbness or tingling
- Muscle cramps or twitching
- Shortness of breath
- Chest pain or discomfort
- High blood pressure that’s difficult to control
- Changes in taste, including a metallic taste or bad breath
- Confusion or reduced alertness in severe kidney failure. (NIDDK)
🩺 Don’t assume these symptoms mean kidney disease
Many of these problems—including fatigue, cramps, swelling, itching, and frequent urination—can have many other causes. Symptoms alone cannot establish a diagnosis.
The most useful checks are:
- Blood test: creatinine/eGFR to assess kidney filtration.
- Urine test: albumin-to-creatinine ratio (UACR) to look for protein leakage.
A UACR above 30 mg/g may indicate kidney damage, while an eGFR below 60 may indicate reduced kidney function; doctors generally interpret these results in context and over time. (NIDDK)
Who should be especially careful?
People with diabetes, high blood pressure, heart disease, or a family history of kidney failure have increased risk and should discuss appropriate kidney testing with their healthcare professional. (NIDDK)
Bottom line: Don’t wait for 23 symptoms. Kidney disease can be silent, so appropriate blood and urine testing is the best way to detect it early.
