C4 lesion isn't good however, I "had" one right about there myself on my 1st for being diagnosed MRI. Copaxone made it go away. Wish my bod didn't adjust to Copaxone cause it got me going strong for 3 yrs.

Test (if you can feel your arms hands fingers) - slowly bow your head/neck down to chest. Notice tingling in hands fingers or arms as neck's bent? I didn't at first.

Hope you're doing good as can be with all you mentioned.