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Giardíase

  • Visão geral
  • Teoria
  • Diagnóstico
  • Tratamento
  • ACOMPANHAMENTO
  • Recursos
Última revisão: 20 Jul 2025
Última atualização: 03 Jan 2025

Resumo

Definição

História e exame físico

Principais fatores diagnósticos

  • diarreia
  • eructação frequente
Detalhes completos

Outros fatores diagnósticos

  • distensão e desconforto abdominais
  • mal-estar
  • perda de peso
  • náuseas e vômitos
Detalhes completos

Fatores de risco

  • água/alimento contaminado
  • animais domésticos vivendo dentro ou ao redor de casa
  • hipogamaglobulinemia
  • pouca idade
  • sexo masculino
  • frequência a creches
  • contato sexual oral-anal
  • uso recente de antibióticos
Detalhes completos

Investigações diagnósticas

Primeiras investigações a serem solicitadas

  • teste de anticorpo fluorescente direto (AFD)
  • ensaio de imunoadsorção enzimática
  • teste de amplificação de ácido nucleico, reação em cadeia da polimerase da amostra fecal
  • microscopia das fezes
  • Hemograma completo
Detalhes completos

Investigações a serem consideradas

  • Imunoensaio de fluxo lateral (por exemplo, ImmunoCard STAT!)
  • aspirados e biópsias duodenais
  • teste do barbante (enteroteste)
Detalhes completos

Algoritmo de tratamento

AGUDA

adulto não gestante ou criança

gestante, primeiro trimestre

gestantes, segundo ou terceiro trimestre

CONTÍNUA

fracasso ou resistência ao tratamento

Colaboradores

Autores

Luther A. Bartelt, MD

Assistant Professor of Medicine

University of North Carolina School of Medicine

Division of Infectious Diseases

Chapel Hill

NC

Declarações

LAB is reimbursed by UpToDate for authorship. LAB has received funding from the National Institutes of Health. LAB is the author of two articles cited in this topic.

Agradecimentos

Dr Luther Bartelt would like to gratefully acknowledge Dr Fida Khan and Dr Musaddiq Waheed, previous contributors to this topic.

Declarações

FK and MW declared that they had no competing interests.

Revisores

Zana Nikolla, MD

Faculty of Medicine

University of Tirana

Tirana

Albania

Declarações

ZN declares that she has no competing interests.

Rodney Adam, MD

Professor of Medicine and Immunobiology

University of Arizona

Tucson

AZ

Disclosures

RA declares that he has no competing interests.

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

Center for Disease Control and Prevention. CDC Yellow Book 2024: health information for international travel. Section 5: travel-associated infections & diseases - ​giardiasis. May 2023 [internet publication].Full text

Centers for Disease Control and Prevention. Giardia: about Giardia infections. May 2024 [internet publication].Full text

Shane AL, Mody RK, Crump JA, et al. 2017 Infectious Diseases Society of America clinical practice guidelines for the diagnosis and management of infectious diarrhea. Clin Infect Dis. 2017 Nov 29;65(12):e45-80.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.
  • Giardíase images

  • Differentials

    • Gastroenterite por rotavírus ou outras gastroenterites virais
    • Diarreia funcional
    • Doença celíaca
    More Differentials

  • Guidelines

    • CDC Yellow Book: health information for international travel - giardiasis
    • Infectious diarrhea: guideline for investigation
    More Guidelines

  • Patient information

    Diarreia em adultos

    More Patient information
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