CIDP of a chronic condition with an uncertain prognosis with episodes of relapse, remissions and progression in some patients. EMG is not diagnostic of CIDP nor it can predict complete remission by itself. Detailed neurological examination along with test like EMG, MRI, Nerve biopsy, Bone marrow biopsy etc. may be required in certain circumstances. Ask your doctor in which of the following four categories your patient fall so that you could get an idea about treatment duration. 1- subacute where symptoms continue to progress and worsen for at least four weeks, but not more than eight weeks before levelling off or improving; 2- chronic progressive where symptoms continue to progress and worsen for a period exceeding eight weeks; 3- chronic relapsing where there is more than one episode in which symptoms progress and worsen for a period greater than four weeks; and 4- recurrent GBS where each bout has a progressive phase of less than four weeks. Dr. Khan Shoeb.