The severe back pain of kidney stone may be discharged downward, and it may be stuck in the ureteral stenosis. Severe kidney stone back pain may be discharging the stone downward, because when the kidney stone is discharged downward, it may cause damage to the surrounding tissues, which will cause severe back pain. Besides, if the kidney stone gets stuck at the end of the ureter in the process of downward discharging, it will also cause severe lower back and abdominal pain, which may be accompanied by frequent urination, hematuria and other symptoms. Therefore, after the kidney stone patients have severe back pain, they should consult a doctor in time for urinary ultrasound testing, to clarify the size and specific location of the stone, to determine whether it can be discharged on its own. If the stones can not be discharged by themselves, other lithotripsy treatments should be carried out, such as extracorporeal shock wave lithotripsy, ureteroscopic lithotripsy and lithotripsy. To summarize, if you suffer from kidney stones, you should consult a doctor in time.