Kidney failure symptoms?

None, if it is mild: Kidney failure can be acute(sudden in onset...In a matte rof days) or chrionic...Years in the making. Most people will feel unwell with low energy, fatigue have nausea or vomiting and lethargic or excessive sleepiness. It is easy to find out by doing a blood test. Just get creatinine and BUN tests through your doctor.

Uremia: If you have renal failure and is unable to excrete toxins and excess electrolytes/water from your body, you are likely to have symptoms and signs of uremia. They include nausea/vomiting, loss of appetite, inability to concentrate, diffuse itching, and lethargy in addition to having fluid retention.