My doctors also thought I originally had CIDP. They also did a spinal tap on me and it came back normal. Then they found out about MMN and felt it was a better fit for me. Some IVig treatments work quickly, others take longer. The second time I had to get my set of five treatments, it took nearly a week before I noticed any difference, while, the first time I had the set of five, I noticed the change quickly. Don't lose hope, just be patient!

My doctors also have mentioned Rituximab.