Hi Mike: Swelling should not occur as a consequence of GBS with facial paralysis. It is certainly common to have a perception of swelling due to sagging of the facial muscles due to their weakness. If there is objective swelling I would hesitate to attribute it to GBS. Facial swelling can occur with IVIg treatment but it would come on during or very shortly after receiving the treatment. If you are still in the hospital make sure that you point it out to the doctors. If you have already been discharged home, get your GP to have a look at it. Gareth Parry