Acute nephritis is commonly seen in children. About 1 to 3 weeks before the onset of acute nephritis, many patients have a history of infections in the throat, upper respiratory tract, or skin. Once acute nephritis occurs, the symptoms typically include obvious signs such as hematuria, edema, and high blood pressure. In severe cases, renal dysfunction may also occur. How long does it take to cure acute nephritis? The duration largely depends on the severity of the patient's condition and the timeliness of the treatment. Most patients with acute nephitis can be cured in about two to three weeks with appropriate treatment. That is to say, after two to three weeks of treatment, the patient's hematuria will disappear, the edema will subside, and the blood pressure will return to normal. At this point, the patient can get out of bed and move around indoors.