Acute renal failure refers to the damage to kidney function, which has a complex cause and is a syndrome caused by a variety of factors. 1. Acute renal failure will lead to poor sleep quality, general weakness, inability to breathe, and after the inability to breathe, you will feel a breath in your chest, which will then affect your chest pain. When the condition of acute renal failure worsens, there will be nausea and vomiting, loss of appetite, diarrhea and other conditions, and in severe cases, even blood in the urine. 2, acute renal failure will lead to the elimination of less urine in the body, if still a lot of water, the amount of water in the body will be too much, there will be edema, especially around the eyes and limbs will be swollen. Some patients will appear frequent urination, especially in the evening is the most obvious, more than three times a day and night to pay attention to. 3. Clinically, some patients suffering from acute renal failure will experience loss of consciousness, restlessness, body convulsions and even coma. Most patients with acute renal failure will have the symptoms of anemia, rapid weight loss, often feel cold all over the body, and sometimes exhaustion. In short, once you find yourself with the above-mentioned kinds of symptoms, you should pay attention to them and go to the hospital for examination in time.