Kidney Disease - Symptoms, Causes, and Treatment Understanding Kidney Disease Kidney disease, also known as renal disease, occurs when the kidneys lose their ability to filter waste and excess fluids from the blood efficiently. If untreated, it can lead to kidney failure requiring dialysis or transplant. Types of Kidney Diseases Chronic Kidney Disease (CKD): Slow, progressive loss of kidney function over time. Acute Kidney Injury (AKI): Sudden loss of kidney function, often reversible if treated early. Polycystic Kidney Disease: A genetic disorder causing cysts to form in the kidneys. Glomerulonephritis: Inflammation of the kidney’s filtering units. Kidney Stones: Hard deposits of minerals causing pain and obstruction. Urinary Tract Infections (UTIs): Can spread to kidneys if untreated. Common Symptoms Fatigue and weakness Swelling in feet, ankles, or face ...