Urine is black a few days ago a little waist pain is how to return a responsibility

Low back pain refers to low back pain, urine is black a few days ago a little low back pain may be caused by strenuous exercise, nephritis, kidney stones and other factors, the correlation analysis is as follows:

1.

If the patient has strenuous exercise, it will cause slight contusion and laceration of the kidney, causing low back pain. It will also lead to renal congestion, bleeding, blood accumulation in the urinary tract, resulting in black urine.

2. After nephritis

occurs, the patient's kidney will appear erosive, swelling, stimulating the kidney, causing local pain, low back pain. It will also lead to kidney oozing, blood oxidation, causing urine to be black.

3. Kidney stones

will be embedded in the kidney, stimulating the kidney, leading to local nerve sensitivity, causing low back pain. It will also puncture the surrounding tissues, bleeding, so that urine color changes, black.