There is a vague pain in the left side of the waist, like a pinch, and many patients are due to stones in the urinary system, kidney stones and ureteral stones will manifest as pain. Kidney crystals or relatively small stones are also prone to a positive urinary occult blood test, or even blood in the urine, and in severe cases, nausea and vomiting may also be manifested. If there is a spasmodic ureteral colic, which radiates to the perineum, lithotripsy or surgical removal of the stone is necessary. And the occurrence of such a disease as ureteral stones is associated with dietary habits, in addition to the development or secondary infections leading to urethral strictures, urinary tract stenosis. Usually, you should pay attention to drink more water, appropriate physical exercise, can also promote the discharge of stones, regular ultrasound examination.