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Pediatric Toxocariasis Differential Diagnoses

  • Author: Germaine L Defendi, MD, MS, FAAP; Chief Editor: Russell W Steele, MD  more...
Updated: Mar 10, 2015
Contributor Information and Disclosures

Germaine L Defendi, MD, MS, FAAP Associate Clinical Professor, Department of Pediatrics, Olive View-UCLA Medical Center

Germaine L Defendi, MD, MS, FAAP is a member of the following medical societies: American Academy of Pediatrics

Disclosure: Nothing to disclose.

Specialty Editor Board

Mary L Windle, PharmD Adjunct Associate Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Nothing to disclose.

Chief Editor

Russell W Steele, MD Clinical Professor, Tulane University School of Medicine; Staff Physician, Ochsner Clinic Foundation

Russell W Steele, MD is a member of the following medical societies: American Academy of Pediatrics, American Association of Immunologists, American Pediatric Society, American Society for Microbiology, Infectious Diseases Society of America, Louisiana State Medical Society, Pediatric Infectious Diseases Society, Society for Pediatric Research, Southern Medical Association

Disclosure: Nothing to disclose.

Additional Contributors

Ashir Kumar, MD, MBBS FAAP, Professor Emeritus, Department of Pediatrics and Human Development, Michigan State University College of Human Medicine

Ashir Kumar, MD, MBBS is a member of the following medical societies: Infectious Diseases Society of America, American Association of Physicians of Indian Origin

Disclosure: Nothing to disclose.


Leslie L Barton, MD Professor Emerita of Pediatrics, University of Arizona College of Medicine

Leslie L Barton, MD is a member of the following medical societies: American Academy of Pediatrics, Association of Pediatric Program Directors, Infectious Diseases Society of America, and Pediatric Infectious Diseases Society

Disclosure: Nothing to disclose.

Marcelo Laufer, MD Attending Physician, Division of Pediatric Infectious Diseases, Miami Children's Hospital

Marcelo Laufer, MD is a member of the following medical societies: American Academy of Pediatrics and Pediatric Infectious Diseases Society

Disclosure: Nothing to disclose.

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Diagram of the Toxocara canis life cycle image. Courtesy of the Centers for Disease Control and Prevention.
Toxocara canis eggs are passed in dog feces, especially puppies' feces. Humans do not produce or excrete eggs; therefore, the presence of these eggs is not a diagnostic finding in human toxocariasis. The egg to the left is fertilized but not yet embryonated, whereas the egg to the right contains a well-developed larva. The latter egg is infectious if it is ingested by a human (frequently, a child). Courtesy of the Centers for Disease Control and Prevention.
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