Diseases & Conditions


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Hypophosphatasia


Synonyms of Hypophosphatasia
  • HHRH
  • Hypercalciuric Rickets
  • Hypophosphatemic Rickets with Hypercalcemia

Disorder Subdivisions

  • Hypophasphatasia, Childhood
  • Hypophasphatasia, Infantile
  • Hypophosphatasia, Adult
  • Pseudohypophosphatasia


General Discussion
Hypophosphatasia is a inborn metabolic disorder of the bones characterized by skeletal defects resembling those of rickets. The symptoms result from a failure of bone mineral to be deposited in young, uncalcified bone (osteoid), and in the cartilage at the end of the long bones (epiphyses) during early years. The activity of the enzyme alkaline phosphatase in blood serum and bone cells is lower than normal. Urinary excretion and blood plasma concentrations of phosphoethanolamine and inorganic pyrophosphate are abnormally high. Unlike other forms of rickets, Hypophosphatasia does not respond to treatment with vitamin D.

Organizations related to Hypophosphatasia
  • CLIMB (Children Living with Inherited Metabolic Diseases)
    Climb Building
    Crewe Intl CW2 6BG
    Phone #: +44- 87-0 7700 325
    800 #: --
    e-mail: info@climb.org.uk
    Home page: http://www.CLIMB.org.uk
  • MAGIC Foundation for Children's Growth
    6645 W. North Avenue
    Oak Park IL 60302
    Phone #: 708-383-0808
    800 #: 800-362-4423
    e-mail: mary@magicfoundation.org
    Home page: http://www.magicfoundation.org
  • MUMS (Mothers United for Moral Support, Inc) National Parent-to-Parent Network
    150 Custer Court
    Green Bay WI 54301-1243
    Phone #: 920-336-5333
    800 #: 877-336-5333
    e-mail: mums@netnet.net
    Home page: http://www.netnet.net/mums/
  • March of Dimes Birth Defects Foundation
    1275 Mamaroneck Avenue
    White Plains NY 10605
    Phone #: 914-428-7100
    800 #: 888-663-4637
    e-mail: Askus@marchofdimes.com
    Home page: http://www.marchofdimes.com
  • NIH/National Arthritis and Musculoskeletal and Skin Diseases Information Clearinghouse
    1 AMS Circle
    Bethesda MD 20892-3675
    Phone #: 301-495-4484
    800 #: 877-226-4267
    e-mail: NIAMSinfo@mail.nih.gov
    Home page: http://www.niams.nih.gov/Health_Info
  • Williams Syndrome Foundation
    161 High Street
    Tonbridge None TN9 1BX
    Phone #: 017-32 -365152
    800 #: --
    e-mail: John.nelson-wsfoundation@btinternet.com
    Home page: http://www.williams-syndrome.org.uk
  • XLH Network Inc.
    4562 Stoneledge Lane
    Manlius NY 13104
    Phone #: 315-682-2659
    800 #: --
    e-mail: info@xlhnetwork.org
    Home page: http://www.xlhnetwork.org



For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders, Inc. ? (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html