Kidney stones form when there are excess salts and minerals in the kidneys. Kidneys are responsible for the removal of waste and fluid from the body through urine. When the concentration of waste is more than the fluid, the waste accumulates to form lumps which result in the formation of kidney stones. They are not always painful and some patients can barely feel any pain or discomfort.
If the stones travel to the ureter, patients can suffer immense sudden pain in the lower back or even cause serious complications. Kidney stones can vary in size, they can be as small as a granule of sand to the size of a golf ball.