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

Pachyonychia Congenita


Synonyms of Pachyonychia Congenita

    Disorder Subdivisions

    • Pachyonychia Congenita Type 1 (PC-1)
    • Pachyonychia Congenita Type 2 (PC-2)


    General Discussion
    Pachyonychia congenita is a rare disorder inherited in an autosomal dominant fashion. It can be divided into two main forms, PC type 1 and PC type 2. The predominant features common to both types are thick nails (hypertrophic nail dystrophy), thick skin on the palms and soles (focal palmoplantar keratoderma) and a white outer layer on the tongue and cheek (oral leukokeratosis). PC-2 is distinguished from PC-1 by the presence of widespread pilosebaceous (associated with hair and related glands) cysts, or cysts that normally develop during puberty; in PC-1 there may be a limited distribution of cysts. Teeth that are present at birth (natal teeth) are a specific feature of PC-2 but they are not always present (not fully penetrant). Pachyonychia congenita is caused by disruptions or changes (mutations) of one of several different genes.

    Organizations related to Pachyonychia Congenita
    • Ectodermal Dysplasia Society
      108 Charlton Lane
      Glos. None GL53 9EA
      Phone #: +44- 12-42 261332
      800 #: N/A
      e-mail: diana@ectodermaldysplasia.org
      Home page: http://www.ectodermaldysplasia.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/
    • National Foundation for Ectodermal Dysplasias
      410 East Main Street
      Mascoutah IL 62258-0114
      Phone #: 618-566-2020
      800 #: --
      e-mail: info@nfed.org
      Home page: http://www.nfed.org
    • Pachyonychia Congenita Project
      2386 East Heritage Way
      Salt Lake City UT 84109
      Phone #: 877-628-7300
      800 #: 877-628-7300
      e-mail: mary.schwartz@pachyonychia.org
      Home page: http://www.pachyonychia.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