The general outline of types is valuable, but there is quite a bit of misinformation in that link on the hereditary neuropathies. CMT is always progressive, even if slowly, the article states that it is "rarely" progressive. Not sure about the part that says males are more often affected- I did get it fom my father, but my sister had a more disabling condition, and my aunt had it as well. The article seems to be repeat some older concepts that have since been modified. It is, however, a comprehensive place to start.