Hi Bea, finding spinal leaks can be very difficult, I’m afraid. A DSM is the best way to locate them. Keep in mind that these only detect SPINAL leaks (not leaks from your nose or ears). Currently, there are no definitive non-invasive ways to measure ICP. 🙁 Because so many of us have damaged vagus nerves (due to compression, surgery, ablations, whiplash, etc), the vagus nerve stimulators are not effective for many. That is why Parasym Plus can be so helpful. It works on the POST-GANGLIONIC portion of the vagus nerve, or directly on the receptor. No matter what the cause of vagus nerve dysfunction, it is effective. Of course, it also crosses the blood brain barrier to boost cognition — something vagus nerve stimulators cannot do. 🙂