Reply To: after 17 years it has started up again
GBS is usually a single event, but can come back in the first year or so as RGBS. It is not likely to be GBS after 17 years. It could be CIDP (the chronic form of GBS) or something else. You should be diagnosed by a knowledgeable neurologist soon so you can get on treatment before any more permanent damage is done.
Here is a publication that describes CIDP and how to test for it: