There are many reasons for one side of the waist to hurt, the common ones are nephritis, ureteral stone, lumbar disc herniation, etc..
1. Nephritis: a group of diseases caused by a variety of etiological factors and a variety of pathogenesis, the typical symptoms of hematuria, proteinuria, edema, etc., such as nephritis on one side can be accompanied by a side of the back pain.
2. Ureteral stones: most of the kidney stones fall down and are discharged into the ureter. Typical symptoms are intermittent low back pain, which can be unilateral, often accompanied by hematuria, urinary frequency, urinary urgency, urinary pain, and sudden anuria.
3. Lumbar disc herniation: due to lumbar disc degeneration, fibrous ring rupture, nucleus pulposus protrusion or prolapse, compression of the surrounding nerve roots, cauda equina and so on, caused by a syndrome, the common manifestations of lumbar pain, sciatica, numbness of the lower limbs, etc., but also for the side of the back pain.
One side of the waist pain may have other reasons such as trauma, etc. It is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease and then actively standardize the treatment.