Welcome to the board and best of luck!
I wrote this last year.
I have a buddy in the AF with 15 yrs in that was diagnosed with MS. He went to a medical review board and they talked about retiring him. He really wants to stay til 20. In addition to the normal package he wrote a letter to the board with his OPRs and his last 3 PT scores. Basically said Yes I have this, we just found out, we are treating it, performance still meets standards, so let me stay a little longer as I can still contribute and you have invested a lot of money into me. If it gets worse we will go this route again and revisit.
AF said makes sense to us, but you are now non worldwide qualified for deployment. He has a staff job and doing fine.
Update: He is doing well and still getting treated. He is getting ready to PCS to an instructor job. If you are interested I can get you hooked up with him via email.