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Malaria

Última revisión: 7 Feb 2026
Última actualización: 17 Jan 2025

Resumen

Definición

Anamnesis y examen

Principales factores de diagnóstico

  • fever or history of fever
Todos los datos

Otros factores de diagnóstico

  • headache
  • weakness
  • myalgia
  • arthralgia
  • anorexia
  • diarrhea
  • seizures
  • nausea and vomiting
  • abdominal pain
  • pallor
  • hepatosplenomegaly
  • jaundice
  • altered level of consciousness
  • hypotension
  • bleeding
  • anuria/oliguria
  • tachypnea
Todos los datos

Factores de riesgo

  • travel to endemic area
  • inadequate or absent chemoprophylaxis
  • insecticide-treated bed net not used in endemic area
  • low host immunity (severe disease)
  • pregnancy (severe disease)
  • age <5 years (severe disease)
  • immunocompromise (severe disease)
  • older age (severe disease)
  • malnutrition (severe disease)
  • iron administration (children)
Todos los datos

Pruebas diagnósticas

Primeras pruebas diagnósticas para solicitar

  • Giemsa-stained thick and thin blood smears
  • rapid diagnostic tests (RDTs)
  • CBC
  • clotting profile
  • serum electrolytes, BUN and creatinine
  • serum LFTs
  • serum blood glucose
  • urinalysis
  • arterial blood gas
Todos los datos

Pruebas diagnósticas que deben considerarse

  • polymerase chain reaction (PCR) blood for malaria
  • chest x-ray
  • blood culture
  • urine culture
  • sputum culture
  • lumbar puncture
  • HIV test
  • PCR nasopharyngeal swabs for influenza or COVID-19
  • CT head
Todos los datos

Pruebas emergentes

  • loop-mediated isothermal amplification

Algoritmo de tratamiento

Agudo

severe disease (or unable to take oral medication initially): all Plasmodium species

Plasmodium falciparum (or unknown species): uncomplicated disease

Plasmodium ovale: uncomplicated disease

Plasmodium vivax: uncomplicated disease

Plasmodium malariae or Plasmodium knowlesi: uncomplicated disease

En curso

Plasmodium falciparum: recurrent infection

Colaboradores

Autores

Elizabeth Ashley, MB BS, FRCP, FRCPath

Director

Institution Lao-Oxford-Mahosot Hospital - Wellcome Trust Research Unit

Vientiane

Laos

Honorary Consultant in Infectious Diseases and Microbiology

Oxford University Hospitals NHS Foundation Trust

Professor of Tropical Medicine

University of Oxford

Oxford

UK

Divulgaciones

EA is an associate editor of Malaria Journal, an academic editor for PLOS Medicine, and is on the Lancet Infectious Diseases International Advisory Board. EA is on the council of the International Society for Infectious Diseases. The Institution Lao-Oxford-Mahosot Hospital - Wellcome Trust Research Unit receives core funding from the Wellcome Trust. EA is an author of a number of references cited in this topic.

Arjun Chandna, BA MRCP AFHEA

Clinical Research Fellow

Centre for Tropical Medicine and Global Health

University of Oxford

Oxford

Specialty Registrar in Infectious Diseases and Medical Microbiology

University College London Hospitals NHS Trust

London

UK

Divulgaciones

None.

Agradecimientos

Dr Elizabeth Ashley and Dr Arjun Chandna would like to gratefully acknowledge Professor Ron Behrens, Mariyam Mirfenderesky, Dr Signe Maj Sorensen, Dr Joanna Allen, Dr Simon Warren, and Dr Behzad Nadjm, previous contributors to this topic.

Divulgaciones

RB acted as a paid expert to the courts on malaria prophylaxis. RB received fees on the Travel Health advisory board for Emergent BioSolutions. RB prepared education material for the Royal College of Physicians and Surgeons of Glasgow. RB is an author of a number of references cited in this topic. MM, SMS, JA, and SW declare that they have no competing interests. BN is an author of a reference cited in this topic.

Revisores por pares

Blaise Genton, MD

Professor

Head of the Travel Clinic

Consultant of Tropical and Travel Medicine

University Hospital

Project Leader

Swiss Tropical and Public Health Institute

Basel

Switzerland

Divulgaciones

BG has received a research grant from Novartis Pharma to assess the impact of the introduction of artemether-lumefantrine (Novartis) as first-line treatment for uncomplicated malaria on mortality of children under 5 years old in 2 districts in Tanzania and travel grants from Novartis Pharma to present the results of the study above. BG is an author of a reference cited in this topic.

David Sullivan, MD

Associate Professor

Malaria Research Institute and Department of Molecular Microbiology and Immunology

Johns Hopkins Bloomberg School of Public Health

Baltimore

MD

Divulgaciones

DS has received royalties from antigen provision for a diagnostic test to Inverness. DS with Johns Hopkins University has patents on diagnostic tests that do not require blood.

Walther H. Wernsdorfer, MD

Professor

Institute of Specific Prophylaxis and Tropical Medicine

Medical University of Vienna

Vienna

Austria

Divulgaciones

WHW declares that he has no competing interests.

Agradecimiento de los revisores por pares

Los temas de BMJ Best Practice se actualizan de forma continua de acuerdo con los desarrollos en la evidencia y en las guías. Los revisores por pares listados aquí han revisado el contenido al menos una vez durante la historia del tema.

Divulgaciones

Las afiliaciones y divulgaciones de los revisores por pares se refieren al momento de la revisión.

Referencias

Nuestros equipos internos de evidencia y editoriales colaboran con colaboradores expertos internacionales y revisores pares para garantizar que brindemos acceso a la información más clínicamente relevante posible.

Artículos principales

World Health Organization. WHO guidelines for malaria. Nov 2024 [internet publication].Texto completo

Centers for Disease Control and Prevention. Clinical guidance: malaria diagnosis & treatment in the U.S. Jun 2024 [internet publication].Texto completo

Artículos de referencia

Una lista completa de las fuentes a las que se hace referencia en este tema está disponible para los usuarios con acceso a todo BMJ Best Practice.
  • Malaria images
  • Diferenciales

    • Dengue fever
    • Zika virus infection
    • Chikungunya virus
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  • Guías de práctica clínica

    • WHO guidelines for malaria
    • Malaria diagnosis and treatment in the US​
    Más Guías de práctica clínica
  • Folletos para el paciente

    Malaria prevention

    Más Folletos para el paciente
  • Videos

    Diagnostic lumbar puncture in adults: animated demonstration

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