Jasmine, it is an acute, usually rapidly progressive form of inflammatory polyneuropathy characterized by muscular weakness and mild distal sensory loss, which in about 2/3 of cases, begins 5 days to 3 wk after a banal infectious disorder, surgery, or an immunization. Guillain-Barré syndrome is the most common acquired demyelinating neuropathy. Cause is unknown but is probably autoimmune.
Most patients improve considerably over a period of months, but about 30% of adults and even more children have residual weakness at 3 yr. Very few people develop permanent paralysis. Good luck