Persistent puffiness around the eyes can sometimes occur when protein leaks into the urine.
Occasional morning puffiness may simply result from sleep, allergies, or salt intake, but repeated swelling deserves attention.
## 5. Foamy Urine
A few bubbles in urine are normal.
However, urine that is consistently very foamy may sometimes indicate protein in the urine.
This is one of the changes healthcare professionals can check with a simple urine test.
## 6. Blood in the Urine
Visible blood in the urine should always be medically evaluated.
Possible causes include:
* urinary tract infections
* kidney stones
* prostate problems
* kidney disease
* other conditions affecting the urinary system
It does not automatically mean kidney failure, but it should not be ignored.
## 7. Urinating More Often at Night
Some people with kidney problems notice they need to get up repeatedly during the night to urinate.
However, nighttime urination may also be caused by:
* diabetes
* prostate enlargement
* medications
* sleep disorders
* drinking large amounts of fluid before bed
## 8. Urinating Less Than Usual
A significant reduction in urine output can occur with certain forms of kidney injury.
This is more concerning when it appears suddenly and is accompanied by swelling, nausea, weakness, or severe illness.
## 9. Very Dark Urine
Dark urine can occur because of dehydration, foods, medications, blood, or other medical problems.
Persistent or unexplained dark urine should be evaluated, especially if it occurs with jaundice, pain, or changes in urination.
## 10. Persistent Itching
Advanced kidney disease can affect mineral balance and allow certain substances to accumulate in the body.
This may contribute to persistent itching.
But itching is extremely common and can also result from dry skin, allergies, liver disease, medications, or skin conditions.
## 11. Very Dry Skin
