Incontinentia Pigmenti

National Organization for Rare Disorders, Inc.

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It is possible that the main title of the report Incontinentia Pigmenti 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.


  • Bloch-Siemens incontinentia pigmenti melanoblastosis cutis linearis
  • Bloch-Sulzberger syndrome
  • IP
  • pigmented dermatosis, Siemens-Bloch type

Disorder Subdivisions

  • None

General Discussion


Incontinentia Pigmenti (IP) is a rare genetic dermatological disorder affecting the skin, hair, teeth, and central nervous system. Progressive skin changes occur in four stages, the first of which appear in early infancy or can be present at birth. IP is an X-linked dominant genetic disorder caused by mutations in the IKBKG gene.


IP was named based on the appearance of the skin under the microscope.

Supporting Organizations

Ectodermal Dysplasia Society

Unit 1 Maida Vale Business Centre
England, GL53 7ER
United Kingdom
Tel: 4401242261332
Tel: 4407805775703

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

Incontinentia Pigmenti International Foundation

30 East 72nd Street
Suite 16
New York, NY 10021
Tel: (212)452-1231
Fax: (212)452-1406

March of Dimes Birth Defects Foundation

1275 Mamaroneck Avenue
White Plains, NY 10605
Tel: (914)997-4488
Fax: (914)997-4763

NIH/National Institute of Arthritis and Musculoskeletal and Skin Diseases

Information Clearinghouse
One AMS Circle
Bethesda, MD 20892-3675
Tel: (301)495-4484
Fax: (301)718-6366
Tel: (877)226-4267

National Foundation for Ectodermal Dysplasias

6 Executive Drive
Suite 2
Fairview Hights, IL 62208
Tel: 618-566-2020
Fax: 618-566-4718

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 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 or email

Last Updated:  1/18/1970
Copyright  2013 National Organization for Rare Disorders, Inc.