It presents with weakness of leg, arm, respiratory, face, or eye muscles, and the symptoms usually progress for up to a week.
Some patients feel unsteady on their feet.
Tingling of the arms or legs or back pain may occur, but these symptoms are usually minor. Sometimes, the condition is mild and can be managed without hospitalization. Often, though, weakness is severe, and patients may have trouble breathing. They require hospitalization. To limit progression of disease, antibodies may be removed by plasmapheresis or their effect may be muted by intravenous gamma globulin.