Clinical manifestations of pediatric acute nephritis: 1, decreased urine output, hematuria, almost all pediatric acute nephritis have hematuria or microscopic hematuria. 2, hypertension, a few pediatric acute nephritis will have severe hypertension, hypertensive encephalopathy, acute left heart failure. 3, edema, 90% of pediatric acute nephritis will have edema, mostly eyelid edema is usually not serious, serious generalized depressed edema. 4, acute kidney injury, usually a transient kidney function abnormality, there will be blood creatinine, urea nitrogen are mildly elevated. 5, encephalopathy, encephalopathy of acute nephritis is common, there will be blood creatinine, urea nitrogen are mildly elevated. 4, acute kidney injury, usually a transient renal function abnormalities, there will be blood creatinine, urea nitrogen are mildly elevated. 5, encephalopathy, acute nephritis encephalopathy is more common, you can see a severe headache, nausea, vomiting, confusion, black blindness, severe paroxysmal convulsions can occur.