Anuria and oliguria

Anuria and oliguria are medical terms used to describe a decreased output of urine. Anuria is a complete absence of urine and oliguria is a decreased output of urine. These symptoms can be caused by a number of conditions, such as kidney failure, dehydration, or blockage in the urinary tract. Symptoms can include decreased urination, dark or cloudy urine, or a feeling of pressure or fullness in the abdomen. Over time, anuria or oliguria can lead to serious medical complications, such as fluid retention, electrolyte imbalances, and kidney damage.