--CIDP, and some other neuropathies that are autoimmune in nature, can have a relapsing/remitting pattern, in which there are exacerbations but then some slow healing and regain of function (until the next exacerbation).

The trick is to find a way to maintain the function regaining and avoid exacerbations. That is what IVIG presumably does in those it works for--it cleans out enough of the offending autoantibodies to allow for some healing.

The progress of neuropathy is very individual in any case.

What kind of work-up have you had, and what kind of testing?