These signs can have many causes and do not automatically mean kidney disease, but persistent symptoms should be discussed with a healthcare professional.
1. Swelling in the feet, ankles, or legs
Fluid buildup can cause puffiness, especially around the lower legs.
2. Puffy eyes, especially in the morning
Swelling around the eyes may sometimes be linked to fluid changes.
3. Foamy or bubbly urine
Persistent foam in urine may indicate protein leakage and should be checked.
4. Blood in the urine
Pink, red, or cola-colored urine can have several causes and should be evaluated.
5. Changes in how often you urinate
- Urinating much more or less than usual
- Waking frequently at night to urinate
6. Very dark or unusually cloudy urine
Changes in urine appearance can have many explanations, including dehydration or infection.
7. Dry, itchy skin
Kidney-related mineral and waste imbalances may contribute to itching.
8. Pale skin or unusual tired appearance
Kidney disease can sometimes contribute to anemia.
9. Unexplained fatigue
Low energy may occur when the kidneys are not working properly.
10. Loss of appetite or nausea
Waste buildup in advanced kidney problems can affect digestion.
11. Unexplained weight loss
A significant change in weight without trying should be evaluated.
12. Muscle cramps or twitching
Electrolyte changes can affect muscles.
13. Shortness of breath
Fluid buildup or anemia may contribute to breathing difficulties.
14. High blood pressure
Kidney problems and high blood pressure are closely linked.
15. Changes in skin color
Some people may notice changes related to anemia or chronic illness.
16. Bad taste in the mouth or unusual breath odor
This may occur in more advanced kidney disease.
17. Difficulty concentrating or feeling confused
Changes in body chemistry can affect brain function.
When to seek medical advice quickly
Contact a healthcare professional if you have:
- Blood in your urine
- Sudden swelling
- Severe shortness of breath
- A major change in urination
- Persistent symptoms that are getting worse
Simple tests that check kidney health
Doctors often use:
- Blood test (eGFR) to estimate kidney function
- Urine test (albumin-to-creatinine ratio) to look for protein leakage
- Blood pressure measurement
Early detection can help protect kidney function and allow treatment of causes that may be manageable.
