Urolithiasis, is a kidney stone in the urinary tract.

Kidney stones typically form in the kidney and leave the body in the urine stream. 

A small stone may pass without causing symptoms. If a stone grows to more than 5 millimeters (0.2 in) it can cause blockage of the ureter resulting in severe pain in the lower back or abdomen.

Young woman in a great deal of pain sitting on her porch and holding her abdomen. Close-up of a kidney stone passing from the kidney, through the ureter, to the bladder.






About half of people will have another stone within ten years.

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