This is a slow process, and your Johns Hopkins neurologist asking for a second opinion is an encouraging sign of medical humility. My main neurologist also sought another pair of neurology eyes at Massachusetts General, and it was their concurrence that opened the way for IVIG. Nothing in this disease is a guarantee, as you know from your knowledge of the research studies. However, if insurance covers it and both neurologists agree to try it, I hope you do. Best of luck!