Renal stone, renal colloulus or nephrolithum, is a hard body formed from uranium minerals. Kidney stones are usually ducted through the duct, and if they are small, they have no signs; but if the size of the kidney stone reaches 3 mm (0.1 inches), it closes the duct and causes severe pain on the sides and back, which also extends to the groin is drawn. This pain is called renal colic and is repeated as a pain reliever every 20 to 60 minutes. Other symptoms of kidney stones include nausea, vomiting, urinary blood, urine pain, and pain during urination. Closure reduces kidney function and kidney size.
Most patients with kidney stones are usually in the early years of puberty and the most prevalent age is about 28 years of age. In general, kidney stones are 4 times more likely than men in women, the ratio of male to female is 2 to 3.