The Brighton Collaboration criteria have standardized the clinical and laboratory-supported diagnosis of Guillain-Barré syndrome (GBS) and Miller Fisher syndrome (MFS) in a way that is applicable in many parts of the world with variable resources. The caveat within the criteria, "absence of an identified alternative diagnosis for weakness" makes GBS a diagnosis of exclusion. Accurate diagnosis of GBS requires a good understanding of an updated, locally contextualised list of mimics, and features that distinguish them from GBS.
Keywords: : acute flaccid paralysis; Brighton Collaboration criteria for Guillain–Barré syndrome; Guillain–Barré syndrome; acute polyradiculoneuropathy; mimics of Guillain–Barré syndrome.