Your kidneys make more or less urine, depending on what your body needs to keep things in balance. If you pee too much or not enough, it can be a sign that something is wrong. Oliguria is when you pee ...

Oliguria occurs when you urinate less than 400 mL of urine per day. It’s usually a symptom of kidney problems, and may be caused by dehydration, injury, or some medications. Most people without ...