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African trypanosomiasis

Última revisão: 24 Sep 2025
Última atualização: 19 Nov 2024

Resumo

Definição

História e exame físico

Principais fatores diagnósticos

  • previous stay in rural west and central Africa (Trypanosoma brucei gambiense)
  • previous stay in game parks in east and southern Africa (T b rhodesiense)
  • enlarged cervical lymph nodes/Winterbottom sign (T b gambiense)
  • chancre (T b rhodesiense)
  • disturbances of consciousness and sleep
Detalhes completos

Outros fatores diagnósticos

  • history of several treatments against malaria with no improvement
  • headache
  • fever
  • fatigue and general malaise
  • history of infertility, menstrual disorders, high miscarriage rate (women)
  • reduced libido, impotence (men)
  • pruritus
  • edema
  • impaired motor functions
  • mental changes
  • signs of cardiac failure (T b rhodesiense)
  • rash
  • hepatosplenomegaly
  • sensory disorders
Detalhes completos

Fatores de risco

  • exposure to tsetse fly
  • living or working in an area with people infected with gambiense trypanosomiasis
  • living or working in an area with animals infected with rhodesiense trypanosomiasis
Detalhes completos

Investigações diagnósticas

Primeiras investigações a serem solicitadas

  • complete blood count
  • erythrocyte sedimentation rate
  • serum immunoglobulins (Ig)
  • rapid diagnostic tests
  • card agglutination test for trypanosomiasis (CATT)
  • immunofluorescence
  • enzyme-linked immunosorbent assay (ELISA)
  • chancre aspirate microscopy
  • lymph node aspirate microscopy
  • blood microscopy
  • microhematocrit centrifugation technique
  • quantitative buffy coat technique
  • mini-anion exchange centrifugation technique (mAECT)
Detalhes completos

Investigações a serem consideradas

  • electrocardiogram
  • cerebrospinal fluid (CSF) white blood cell (WBC) count
  • CSF microscopy
  • double centrifugation of CSF
  • modified single centrifugation of CSF
  • CSF protein
Detalhes completos

Novos exames

  • polymerase chain reaction (PCR)
  • reverse transcriptase real-time PCR (RT-PCR)
  • intrathecal immunoglobulin production
  • stage biomarkers
  • immune trypanolysis
  • T b gambiense inhibition ELISA (g-iELISA)
  • MRI brain

Algoritmo de tratamento

AGUDA

gambiense human African trypanosomiasis (HAT)

rhodesiense human African trypanosomiasis (HAT)

CONTÍNUA

relapse

Colaboradores

Autores

Veerle Lejon, PhD

Director of Research

Institut de Recherche pour le Développement

Montpellier

France

Declarações

VL is an author of several references cited in this topic. VL declares that she has no competing interests.

José Ramón Franco, MD, MPH

Medical Officer

Control of Neglected Tropical Diseases

Human African Trypanosomiasis Control Program

World Health Organization

Geneva

Switzerland

Declarações

JRF is an author of several references cited in this topic. JRF declares that he has no competing interests.

Pere P. Simarro, MD, PhD

Former head of WHO HAT control and surveillance programme

WHO temporary advisor

World Health Organization

Geneva

Switzerland

Declarações

PPS is an author of several references cited in this topic.

Revisores

Sanjeev Krishna, MA (Cantab), BMChB (Oxon), DPhil, FRCP, ScD (Cantab), FMedSci

Professor of Molecular Parasitology and Medicine

Centre for Infection

Division of Cellular and Molecular Medicine

St. George's

University of London

London

UK

Disclosures

SK is a consultant for the Foundation for Innovative Diagnostics, a non-profit organization developing diagnostics for neglected diseases such as HAT. SK is an author of a reference cited in this topic.

Mike Barrett, BSc, PhD

Professor

Division of Infection and Immunity

Institute of Biomedical and Life Sciences

The Glasgow Biomedical Research Centre

University of Glasgow

Glasgow

UK

Disclosures

MB declares that he has no competing interests.

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

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Key articles

World Health Organization. Guidelines for the treatment of human African trypanosomiasis. Jun 2024 [internet publication].Full text

Centers for Disease Control and Prevention. Clinical care of human African trypanosomiasis​. Apr 2024 [internet publication].Full text

Reference articles

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

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