Hi Amarillis, How interesting — I don’t know that I’ve heard of anyone else having a diagnosis of a CSF leak (spinal) without any evidence of it. I believe that certainly occurs (leaks can be occult or intermittent), but how would someone make that ‘diagnosis’? Perhaps it is considered “presumed”? I’m eager to hear what others may think. As far as symptoms, the number one symptom found in spinal leaks is the WORST HEADACHE EVER when vertical. The headache is relieved when lying down. Does that happen to you?