Hi Chris,
I have very similar problem to Yours it seams. Im 31 and had 2 doses of hbv vaccination. I have leg weakness and strange feeling in arms (like burning).I was tested form ms. I also had mri of head and neck spinal cord - both were clear. I had spinal tap test - everything ok (IG index , and olygoclonal bands negative). Now I'm going to have another mri scan of spinal cord in chest part.
I'm very sorry for You, I know exactly what You feel. I still hope that it is something not very serious. How are You right now ? Do You have any diagnose and treatment ?
best regards
Michal
PS. Forgive my errors, I'm not English and my english is not very fluent - I'm from Poland.
I tried to email but it was not possible, this functionality doesn't work, so if anyone want to send me any advice pleas email to: michu73@tlen.pl