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Giardiasis

Last reviewed: 4 May 2025
Last updated: 03 Jan 2025

Summary

Definition

História e exame físico

Principais fatores diagnósticos

  • diarrhoea
  • frequent belching
Detalhes completos

Outros fatores diagnósticos

  • abdominal bloating and discomfort
  • malaise
  • weight loss
  • nausea and vomiting
Detalhes completos

Fatores de risco

  • contaminated water/food
  • domestic animals living in or around the house
  • hypogammaglobulinaemia
  • young age
  • male sex
  • day-care centre attendance
  • oral-anal sexual contact
  • recent antibiotic use
Detalhes completos

Investigações diagnósticas

Primeiras investigações a serem solicitadas

  • direct fluorescence antibody (DFA) test
  • enzyme-linked immunosorbent assay
  • nucleic acid amplification test, polymerase chain reaction of stool sample
  • stool microscopy
  • FBC
Detalhes completos

Investigações a serem consideradas

  • Lateral flow immunoassay (e.g., ImmunoCard STAT!)
  • duodenal aspirates and biopsies
  • string test (EnteroTest)
Detalhes completos

Algoritmo de tratamento

AGUDA

non-pregnant adult or child

pregnant; first trimester

pregnant; second or third trimester

CONTÍNUA

treatment failure or resistance

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

Declarações

RA declares that he has no competing interests.

Referências

Nossas equipes internas de editoria e de evidências trabalham em conjunto com colaboradores internacionais especializados e pares revisores para garantir que forneçamos acesso às informações o mais clinicamente relevantes possível.

Principais artigos

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].Texto completo

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

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.Texto completo  Resumo

Artigos de referência

Uma lista completa das fontes referenciadas neste tópico está disponível para os usuários com acesso total ao BMJ Best Practice.
  • Giardiasis images
  • Diagnósticos diferenciais

    • Rotavirus or other viral gastroenteritis
    • Functional diarrhoea
    • Coeliac disease
    Mais Diagnósticos diferenciais
  • Diretrizes

    • CDC Yellow Book: health information for international travel - giardiasis
    • Infectious diarrhea: guideline for investigation
    Mais Diretrizes
  • Folhetos informativos para os pacientes

    Diarrhoea in adults

    Mais Folhetos informativos para os pacientes
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