I agree with Suzanne C. There is a lot of misinformation in that article. Much has been learned about the types of CMT and HNPP.

Scroll towards the bottom to learn about CMTX.

http://www.ncbi.nlm.nih.gov/books/NBK1374/

You can learn all about HNPP from this site.

http://www.hnpp.org/

Remember that CMT and all the types and there are many - symptoms affect everyone differently even within the same family. And a person may not show any symptoms but can still pass it on. CMT is still misdiagnosed as something like polio, Fredrick's Ataxia, etc.

CMT is very complicated. Much research is going on but there is no cure/treatment at the present time. And it is progressive.