question: I have been suffering recurring bouts of dizziness and vertigo, sometimes with headaches and nausea too, for the last month. I feel like my head is spinning constantly and my balance is slightly off. My physician took blood for testing and after checking my reflexes and eyesight (all normal), referred me for an MRI brain scan with IAMS. In the referral letter, he said he wanted to rule out demyelineation. Can you please explain what this is? Does it relate to MS? Thank you.