Kidney disease and kidney stones may sound similar, but they’re completely different conditions that affect your kidneys in their own way. Kidney disease is a slow, progressive decline in kidney function, often caused by diabetes, high blood pressure, or long-lasting infections. Symptoms are subtle—fatigue, swelling, and changes in urination. Kidney stones, on the other hand, are hard mineral deposits that cause sudden, intense pain in the lower back or abdomen. You may feel burning during urination or notice blood in your urine. Kidney disease requires a nephrologist, while kidney stones are best handled by a urologist or kidney stone specialist. Understanding these differences helps you choose the right doctor and get the right treatment quickly.