Last reviewed: April 2018
Last updated: April  2018

Summary

Definition

History and exam

Key diagnostic factors

  • presence of risk factors

Other diagnostic factors

  • asymptomatic
  • co-infection with other parasites
  • developmental delay
  • malnutrition
  • fever
  • cough
  • wheezing
  • dyspnoea
  • haemoptysis
  • hypoxia
  • tachypnoea
  • rhonchi, rales
  • retractions
  • urticarial skin lesions
  • abdominal pain
  • anorexia
  • dyspepsia
  • nausea
  • vomiting
  • diarrhoea
  • constipation
  • abdominal distension
  • reduced or absent bowel sounds
  • hypotension
  • RUQ tenderness
  • hepatomegaly
  • jaundice
  • signs/symptoms of iron deficiency anaemia or kwashiorkor

Risk factors

  • history of travel to or residence in endemic areas
  • children <14 years
  • poverty
  • poor sanitation
  • poor hygiene
  • warm climate
  • contact with pigs

Diagnostic investigations

1st investigations to order

  • stool microscopy
  • chest x-ray
  • abdominal x-ray
Full details

Investigations to consider

  • sputum/gastric aspirate microscopy
  • FBC
  • contrast study
  • barium follow-through
  • abdominal ultrasound
  • abdominal CT
  • endoscopic retrograde cholangiopancreatography (ERCP)
Full details

Emerging tests

  • antibodies to Ascaris lumbricoides
  • serum IgE
  • interleukin (IL)-4, IL-5, and IL-13
  • urine-based gas liquid chromatography
Full details

Treatment algorithm

Contributors

Authors VIEW ALL

Professor of Pediatrics, Microbial Pathogenesis, and Public Health

Director

Yale World Fellows Program

New Haven

CT

Disclosures

MC declares that he has no competing interests.

Dr Michael Cappello would like to gratefully acknowledge Dr Samantha H. Johnston and Dr Claire Panosian, previous contributors to this topic. SHJ owns a share in a company (Merck & Co., Inc.) that produces ivermectin, an alternative therapy for ascariasis. CP declares that she has no competing interests.

Peer reviewers VIEW ALL

Director

Stanford Health Promotion Network

Stanford School of Medicine

Palo Alto

CA

Disclosures

YM declares that he has no competing interests.

Associate Professor

Department of Medical Parasitology and Mycology

School of Public Health

Tehran University of Medical Sciences

Iran

Disclosures

MBR declares that he has no competing interests.

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