When viewing this topic in a different language, you may notice some differences in the way the content is structured, but it still reflects the latest evidence-based guidance.

Síndrome de Guillain-Barré

Evidence last reviewed: 21 Apr 2026
Topic last updated: 13 Jan 2026

Summary

Definition

History and exam

Key diagnostic factors

  • presença de fatores de risco
  • fraqueza muscular
  • parestesia
  • dorsalgia/dor nas pernas
  • dificuldade respiratória
  • problemas de fala
  • arreflexia/hiporreflexia
  • fraqueza facial
  • disfunção bulbar que causa fraqueza orofaríngea
  • fraqueza muscular extraocular
  • paralisia facial
  • diplopia
  • disartria
  • disfagia
  • disautonomia
  • disfunção pupilar
  • oftalmoplegia
Full details

Other diagnostic factors

  • ataxia
  • ptose
  • nível alterado de consciência
Full details

Risk factors

  • doença viral precedente
  • infecção bacteriana precedente
  • infecção viral transmitida por artrópodes que precede a infecção
  • infecção por hepatite E
  • imunização
  • câncer e linfoma
  • imunoterapia com inibidor de checkpoint imunológico ou células T com receptor de antígeno quimérico (CAR)
  • idade avançada
  • Infecção pelo vírus da imunodeficiência humana (HIV)
  • Infecção por COVID-19
  • sexo masculino
Full details

Diagnostic tests

1st tests to order

  • estudos da condução nervosa
  • punção lombar
  • TFHs
  • espirometria
Full details

Tests to consider

  • anticorpo anti-gangliosídeo
  • sorologia
  • coprocultura
  • anticorpos antivírus da imunodeficiência humana (anti-HIV)
  • ressonância nuclear magnética (RNM) espinhal
  • ultrassonografia dos nervos periféricos
  • sorologia para Borrelia burgdorferi
  • reação em cadeia da polimerase para meningococos para o líquido cefalorraquidiano (LCR)
  • citologia do líquido cefalorraquidiano (LCR)
  • enzima conversora de angiotensina no LCR
  • radiografia torácica
  • VDRL no líquido cefalorraquidiano (LCR)
  • reação em cadeia da polimerase do Nilo Ocidental para o LCR
Full details

Treatment algorithm

ACUTE

incapaz de deambular ou fraqueza bulbar grave ou instabilidade autonômica até 4 semanas após o início; ou deambulando com doença leve até 2 semanas após início

Contributors

Authors

Saiju Jacob, MD, DPhil, MRCP (UK), FRCP (Lon), FAAN

Consultant Neurologist

Queen Elizabeth Neurosciences Centre

University Hospital Birmingham

Birmingham

UK

Disclosures

SJ has served as a paid international advisory board member or invited speaker for Alexion, Alnylam, ArgenX, Immunovant, Janssen, Merck, Novartis, Regeneron and UCB pharmaceuticals, is currently an expert panel member of the Myasthenia Gravis Consortium for Argenx pharmaceuticals. He has received speaker’s fees from Terumo BCT and Eisai pharmaceuticals. SJ declares that none of these are relevant to the current article.

Roshan Iqbal, MD, DM, MRCP (UK)

Neurology Specialist Registrar

Queen Elizabeth Neurosciences Centre

University Hospital Birmingham

Birmingham

UK

Disclosures

RI declares that he has no competing interests.

Acknowledgements

Prof Saiju Jacob would like to gratefully acknowledge Prof John B. Winer, Dr Michael T. Torbey, Dr Dhruvil J. Pandya, and Dr Prem A. Kandiah, previous contributors to this topic.

Disclosures

JBW, MTT, DJP, and PAK declare that they have no competing interests.

Peer reviewers

Long Davalos Loo, MD

Assistant Professor of Neurology

University of Cincinnati

Cincinnati

OH

Disclosures

LDL declares that he has no competing interests.

Robert Hadden, FRCP, PhD

Consultant Neurologist

King's College Hospital

London

UK

Disclosures

RH has been paid by Baxter Healthcare Ltd for membership of its neurology advisory board, and is a co-author of several studies referenced in this topic.

Peer reviewer acknowledgements

BMJ Best Practice topics are updated on a rolling basis in line with developments in evidence and guidance. The peer reviewers listed here have reviewed the content at least once during the history of the topic.

Disclosures

Peer reviewer affiliations and disclosures pertain to the time of the review.

References

Our in-house evidence and editorial teams collaborate with international expert contributors and peer reviewers to ensure that we provide access to the most clinically relevant information possible.

Key articles

van Doorn PA, Van den Bergh PYK, Hadden RDM, et al. European Academy of Neurology/Peripheral Nerve Society guideline on diagnosis and treatment of Guillain-Barré syndrome. Eur J Neurol. 2023 Dec;30(12):3646-74.Full text  Abstract

Leonhard SE, Mandarakas MR, Gondim FAA, et al. Diagnosis and management of Guillain-Barré syndrome in ten steps. Nat Rev Neurol. 2019 Nov;15(11):671-83.Full text  Abstract

Hughes RA, Swan AV, van Doorn PA. Intravenous immunoglobulin for Guillain-Barré syndrome. Cochrane Database Syst Rev. 2014 Sep 19;(9):CD002063.Full text  Abstract

Hughes RA, Wijdicks EF, Barohn R, et al. Practice parameter: immunotherapy for Guillain-Barré syndrome: report of the Quality Standards Subcommittee of the American Academy of Neurology. Neurology. 2003 Sep 23;61(6):736-40.Full text  Abstract

Reference articles

A full list of sources referenced in this topic is available to users with access to all of BMJ Best Practice.
  • Differentials

    • Polirradiculoneuropatia desmielinizante inflamatória crônica (PDIC) de início agudo
    • Mielite transversa
    • Miastenia gravis
    More Differentials
  • Guidelines

    • Guideline on diagnosis and treatment of Guillain-Barré syndrome
    • Diagnosis and treatment of Guillain-Barre syndrome in childhood and adolescence: an evidence- and consensus-based guideline
    More Guidelines
  • Patient information

    Síndrome de Guillain-Barré

    Punção lombar

    More Patient information
  • Videos

    Punção lombar diagnóstica em adultos: demonstração animada

    Intubação traqueal - Vídeo de demonstração

    More videos
  • padlock-lockedLog in or subscribe to access all of BMJ Best Practice

Use of this content is subject to our disclaimer