Urinary stones often strike at night and present with the clinical symptom of severe pain in the lower back and abdomen. This pain is sometimes so severe that the patient is unable to sleep further. This is because the whole body is relaxed at night, when the vagus nerve is more active. When a stone gets stuck in the ureter, it causes the ureter to spasm, so it triggers the clinical symptoms of urinary tract stones. This clinical symptom is generally called renal colic. If this occurs, you need to go to the hospital for examination and treatment in a timely manner. You can initially do urinary routine and urological ultrasound examination to clarify the diagnosis. Once the diagnosis is confirmed it is recommended that treatment in terms of antispasmodic and pain relief, such as the use of diazoxide and flurbiprofen ester, can be performed.