Upper left back pain may be related to lumbar muscle strain, lumbar intervertebral disc herniation, acute glomerulonephritis and so on.
1. Lumbar muscle strain: keeping the left lumbar muscle in a single position for a long time can lead to chronic injury of the lumbar muscles, thus causing the patient to have the symptom of pain in the upper left lumbar region.
2. Herniated lumbar intervertebral disc: when the lumbar intervertebral disc is herniated, it can lead to nerve root compression and lumbar pain symptoms, and may also be accompanied by one side of the lower limb pain and numbness and other symptoms.
3. Acute glomerulonephritis: Upper respiratory tract infection, exertion and other factors can cause acute glomerulonephritis in the left kidney, which can cause pain in the upper left side of the waist, and can also be accompanied by hematuria.
Left upper back pain can also be caused by other reasons, it is recommended that patients go to the hospital in a timely manner, improve the relevant examination for targeted treatment.