The initial electrodiagnostic signs that distinguish acute inflammatory demyelinating polyneuropathy from acute motor axonal neuropathy

Abstract

Background: Guillain–Barré syndrome (GBS) is divided into 2 neurophysiological subtypes, acute inflammatory demyelinating polyneuropathy (AIDP) and acute motor axonal neuropathy (AMAN). The early electrodiagnostic findings of AIDP overlap with AMAN, leading to the latter's under-diagnosis. Serial nerve conduction studies (NCSs) are more sensitive, but not always feasible.