Kidney Stones, also known as renal calculi, are hard masses that separate urine from the urinary tract. These stones can occur anywhere in the urinary tract, including the kidneys, bladder, ureters and urethra.
This fluid is called the cerebrospinal fluid (CSF). When it leaks out, the pressure around the brain and spinal cord drops. Causes of leakage through the dura include: 1  Certain head, brain, or spinal surgeries.  Head injury.
A hole is left in the covering of the spine from the needle placement, and cerebrospinal fluid leaks from the hole. Other causes of spinal headache include trauma to the spine and brain and surgery to the spine or brain. In all these cases, the cause of the leak is well defined. hole is left in the covering of the spine from the needle placement, and cerebrospinal fluid leaks from the hole. Other causes of spinal headache include trauma to the spine and brain and surgery to the spine or brain. In all these cases, the cause of the leak is well defined.