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    Pyridoxine-Dependent Epilepsy

    Important
    It is possible that the main title of the report Pyridoxine-Dependent Epilepsy 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

    • pyridoxine-dependent seizures
    • antiquitin deficiency
    • PDE

    Disorder Subdivisions

    • None

    General Discussion

    Pyridoxine-dependent epilepsy (PDE) is a rare cause of stubborn, difficult to control, (intractable) seizures appearing in newborns, infants and occasionally older children, of which more than 200 cases have now been reported in the medical literature. PDE presents in a variety of forms with variable signs and symptoms (phenotypically heterogeneous). The one clinical feature characteristic of all patients with PDE is intractable seizures that are not controlled with antiepileptic drugs but which do respond both clinically and usually on EEG (electroencephalographically) to large daily supplements of pyridoxine. These patients are not pyridoxine-deficient. They are metabolically dependent on the vitamin. In other words, even though they get the recommended daily allowance (RDA) of pyridoxine from their normal diet, they require substantially more of the vitamin than an otherwise normal individual. Patients with PDE require pyridoxine therapy for life.

    Resources

    Epilepsy Foundation
    8301 Professional Place
    Landover, MD 20785-7223
    Tel: (866)330-2718
    Fax: (877)687-4878
    Tel: (800)332-1000
    TDD: (800)332-2070
    Email: ContactUs@efa.org
    Internet: http://www.epilepsyfoundation.org

    American Epilepsy Society
    342 North Main Street
    West Hartford, CT 06117-2507
    Tel: (860)586-7505
    Fax: (860)586-7550
    Email: khucks@aesnet.org
    Internet: http://www.aesnet.org

    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: 3/5/2014
    Copyright 2003, 2007, 2011, 2014 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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