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* Pink
* Red
* Brown
* Tea-colored
Possible causes range from urinary infections and kidney stones to kidney disease and other urinary-tract conditions.
Visible blood in the urine should be medically evaluated.
## 6. Urinating More Often at Night
Some people with kidney problems notice changes in urination frequency.
Waking repeatedly to urinate can also result from:
* Drinking a lot before bed
* Diabetes
* Prostate enlargement
* Sleep disorders
* Diuretic medications
A new persistent pattern is worth discussing with a healthcare professional.
## 7. Urinating Less Than Usual
A significant reduction in urine output can occur when the kidneys are not filtering properly.
It can also happen with severe dehydration, urinary obstruction, or acute illness.
Very little urine together with swelling, weakness, or shortness of breath deserves prompt medical attention.
## 8. Persistent Itchy Skin
