Sudden "knife" -like colic on one side of the waist and abdomen

Sudden "knife" -like colic occurs on one side of the waist and abdomen, which radiates to the lower abdomen, perineum and inner thigh along the direction of the ureter, which can last for several minutes to several hours. At the time of the onset of low back pain, the patient bent over his back and was restless. He was pale and sweaty. There are different degrees of hematuria after pain, more common in urinary stones.

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