I may or may not have issues with my CNS. I've had a bunch of DNA tests to try and figure my neuropathy symptoms but they all came back negative. I have a tumour on my spinal cord so we've decided to blame that for the neurological stuff. My neurosurgeon said years ago that it wasn't the cause but the process of elimation with my neurologists seem to leave us with just the tumour. I've been told I'm untreatable and untestable so we'll never really know.