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
