Pathophysiology
Cerebrospinal fluid is produced by the choroid plexus in the brain and contained by the dura and arachnoid layers of the meninges. The brain floats in CSF, which also transports nutrients to the brain and spinal cord. As holes form in the spinal dura mater, CSF leaks out into the surrounding space. The CSF is then absorbed into the spinal epidural venous plexus or soft tissues around the spine. Due to the sterile conditions of the soft tissues around the spine there is no risk of meningitis.
Read more about this topic: Spontaneous Cerebrospinal Fluid Leak