Some CSF leaks require imaging, such as a CT scan or MRI, for diagnosis. A spinal tap may also provide information. However, if unexplained fluid is leaking from your nose or ears and you can ...

A CSF leak occurs when the fluid escapes through a tear or hole in the dura mater—the tough, outermost layer of the meninges that surrounds the brain and spinal cord. The dura can be damaged ...