Unusual rash or itchiness
Properly functioning kidneys remove waste from the bloodstream and keep the circulatory system equipped with the proper balance of nutrients and minerals. When something in that balances goes awry, it can impact the look and feel of your skin, which reacts negatively to built-up waste. Rashes and itchiness caused by kidney malfunction often feel like they go deeper than the skin’s surface, and topical treatments might yield little relief.
Metallic taste in the mouth
A build-up of toxins in the bloodstream as a result of poor kidney function could also contribute to a metallic taste in the mouth or foul breath. Some patients report that food begins to taste metallic. Others stop enjoying meat as much as they did when their kidneys were healthy.
Nausea or vomiting
If enough waste builds up in the body, you might experience nausea or vomiting. Consider it your body’s way of ensuring those toxins make their way out. Nausea could also lead to a lack of appetite, which, if it occurs for an extended period of time, could cause abnormal weight loss.
Unnecessary urges to pee
Because the kidneys produce urine, frequent (or infrequent) trips to the bathroom are something you’ll want to monitor. For some people, kidney disease results in false urges to pee, while others will report a greater amount of urination than usual. Many say this abnormal urination schedule wakes them up at night.
Changes in urine
In addition to peeing more or less frequently, you might also notice a change in the urine itself. Common abnormalities include:
passing blood in the urine
darker or lighter color than usual
foamy or bubbly consistency
Swollen ankles, legs, feet, or face
Another function of the kidneys is to remove excess fluid from the body. If they stop doing this, that fluid can accumulate, especially in the extremities, such as the ankles, legs, feet, face, and hands.
Tiredness and fatigue
Without properly functioning kidneys to monitor red-blood-cell counts, kidney disease patients might experience mild to severe anemia, which often leads to chronic fatigue. Other symptoms include feeling unusually cold, dizzy, or out of breath
Source: Reader’s Digest