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    Toxocariasis

    Important
    It is possible that the main title of the report Toxocariasis is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.

    Synonyms

    • Toxocaral Larva Migrans
    • Human infection with the larvae of canine or feline roundworms

    Disorder Subdivisions

    • Ocular Larva Migrans (OLM); Ocular Toxocariasis
    • Covert Toxocariasis; Asymptomatic Toxocariasis
    • Visceral Larva Migrans (VLM); Visceral Toxocariasis

    General Discussion

    Toxocariasis is an infectious disease caused by the parasite Toxocara, a worm of dogs and cats. Toxocariasis is not limited to pet owners. The eggs of the parasite are passed in the stool and lie dormant in the soil. For unknown reasons, humans become infected when exposed to the eggs passed only by dogs. Infection occurs when there is purposeful or incidental ingestion of soil from hand to mouth through such activities as biting finger nails or inserting recently contaminated objects such as toys into the mouth. (Consequently, the disorder is found disproportionately among children.) Once ingested, the eggs hatch into larvae and burrow into body tissue of all types. The symptoms experienced depend on the number of eggs ingested and the person's immune status, yet a single egg has the potential of causing blindness. Everywhere the larvae travel, they cause inflammation and tissue death.

    Resources

    Centers for Disease Control and Prevention
    1600 Clifton Road NE
    Atlanta, GA 30333
    Tel: (404)639-3534
    Tel: (800)232-4636
    TDD: (888)232-6348
    Email: cdcinfo@cdc.gov
    Internet: http://www.cdc.gov/

    NIH/National Institute of Allergy and Infectious Diseases
    Office of Communications and Government Relations
    6610 Rockledge Drive, MSC 6612
    Bethesda, MD 20892-6612
    Tel: (301)496-5717
    Fax: (301)402-3573
    Tel: (866)284-4107
    TDD: (800)877-8339
    Email: ocpostoffice@niaid.nih.gov
    Internet: http://www.niaid.nih.gov/

    Genetic and Rare Diseases (GARD) Information Center
    PO Box 8126
    Gaithersburg, MD 20898-8126
    Tel: (301)251-4925
    Fax: (301)251-4911
    Tel: (888)205-2311
    TDD: (888)205-3223
    Internet: http://rarediseases.info.nih.gov/GARD/

    For a Complete Report:

    This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".

    The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.

    It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report

    This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

    For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site www.rarediseases.org or email orphan@rarediseases.org

    Last Updated: 4/7/2009
    Copyright 1988, 1989, 1997, 1999, 2007, 2009 National Organization for Rare Disorders, Inc.

    WebMD Medical Reference from the National Organization for Rare Disorders

    Last Updated: May 28, 2015
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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