Acute Vs Chronic GBS

  My father has recently been diagnosed with GBS.  I have been told it is the chronic form.  I have been unable to find any information on Chronic GBS.  Was my family referring to CIDP?  WHat is the difference between acute and chronic GBS (or CIDP)?
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GBS is really an acute syndrome. There are demyelinating forms (the most common type) and axonal forms. These refer to the site of injury to the nerves involved. "Acute" means peak weakness in a week or less, with slow gradual recovery which could take several weeks.
Sometimes people refer to a "chronic" GBS. But really they should talk about CIDP, which has its own criteria (one of which is that the illness has persisted 8 weeks).
I hope this helps. CCF MD mdf.