There are many reasons why the left side of the waist hurts, the common ones are nephritis, ureteral stone, lumbar disc herniation, etc..
1. Nephritis: a group of diseases caused by a variety of causes and a variety of pathogenesis, early asymptomatic, but also can be manifested as hematuria, proteinuria, edema, hypertension and other typical symptoms, if it occurs in the left side can also be the symptoms of low back pain on the left side.
2. Ureteral stones: If there are stones in the left ureter, it will be manifested as sudden pain in the left side of the lower back, often accompanied by hematuria, urinary frequency, urinary urgency, nausea and other symptoms.
3. Lumbar disc herniation: the nucleus pulposus protrudes or prolapses due to the degeneration of the lumbar disc, which stimulates the peripheral nerve roots and the cauda equina, and may be accompanied by the symptoms of left-sided lumbar pain and sciatic nerve pain, which are often accompanied by numbness of the lower limbs.
The left side of the waist pain may have other causes such as left lumbar sprain, lumbar transverse fracture, herpes zoster and lumbar muscle strain, etc. If the symptoms are obvious, we suggest that we go to the hospital in time to consult a doctor, and actively standardize the treatment after a clear diagnosis.