Kidney Stones
Kidney stones form when minerals or acid salts in your urine form crystals, which later become stones. Every person has a 5 to 10% chance of forming a urinary stone in their whole life with men more likely to form stones than women. Kidney or ureteral stones can block the normal urine flow through the ureter resulting in severe pain in loin and flank. This severity depends on stone characteristics e.g. the size, shape, and location of the stone.