I have had headaches for 3 months now and have many trips to my NS with many tests done. My NS does not know the cause of my headaches, or why they are lasting this long. Yes, I have had an ICP monitoring test, normal. I have had a few head CT's and shunt series tests as well, but they showed nothing significantly wrong, unless the adjustments were set too high showing bigger ventricles once. I am set at a high number again, as I have been all month long, and have not improved, and am awaiting a callback tomorrow for a visit to clinic on Thursday to see someone for this concern. I want to know if anyone else has gone through this?