Hi,. How do you know if you are or have progressed closer to the next level? Anyone who has read my posts will know I have hade ongoing issues and for around 18 months suffering from low blood pressure, dizziness, headaches, probably due to the low BP. My walking is worse as is my balance etc. I keep swearing it is the drug(Tysabri) But maybe Not? I see my neurologist again on Friday the 4th, so will again discuss and again ask if I can try the new drug ocre, but if I have moved on evidently I won't get it as they say DMT drugs are not any good for secondary Ms?