I'm so sorry your boy Jaxson is going through this. It's so heartbreaking when our bullies are sick and the cause is unknown. I don't have experience w/neurological disorders in my own dogs but I know others on this forum have and hopefully will be able to give you some words/input. In the meantime, what is the course of Jaxson's hospital stay now? I take it he's still being worked up by the neurologist? Hugs to you and your family!