Kidney Stones

Symptoms

Very small kidney stones may pass out of the body in the urine without causing symptoms. Larger stones may become trapped in the narrow ureter, causing severe pain in the back or side, nausea and vomiting, or blood in the urine. If there is blood in your urine, the urine may look pink, red, or brown. If the location of pain shifts downward, closer to the groin, this usually indicates that the stone has traveled downward in the ureter and is now closer to the bladder. As the stone approaches the bladder, you may feel a stronger urge to urinate or a burning sensation when urinating. When stones pass out of your body in your urine, you may see the stones exit.