Kidney disorders in children can range from congenital anomalies to acquired conditions. Common issues include: - Congenital anomalies: Conditions like polycystic kidney disease and hydronephrosis. - Infections: Urinary tract infections (UTIs) can affect kidney function if not treated promptly. - Nephrotic syndrome: A condition characterized by excessive protein loss in urine. - Acute kidney injury (AKI): Sudden loss of kidney function due to various causes. - Chronic kidney disease (CKD): Progressive loss of kidney function over time.