Waardenburg Syndrome - General Discussion

SYMPTOMS & TREATMENTS

Waardenburg syndrome is a genetic disorder that may be evident at birth (congenital). The range and severity of associated symptoms and findings may vary greatly from case to case. However, primary features often include distinctive facial abnormalities; unusually diminished coloration (pigmentation) of the hair, the skin, and/or the iris of both eyes (irides); and/or congenital deafness. More specifically, some affected individuals may have an unusually wide nasal bridge due to sideways (lateral) displacement of the inner angles (canthi) of the eyes (dystopia canthorum). In addition, pigmentary abnormalities may include a white lock of hair growing above the forehead (white forelock); premature graying or whitening of the hair; differences in the coloration of the two irides or in different regions of the same iris (heterochromia irides); and/or patchy, abnormally light (depigmented) regions of skin (leukoderma). Some affected individuals may also have hearing impairment due to abnormalities of the inner ear (sensorineural deafness).

Researchers have described different types of Waardenburg syndrome (WS), based upon associated symptoms and specific genetic findings. For example, Waardenburg syndrome type I (WS1) is characteristically associated with sideways displacement of the inner angles of the eyes (i.e., dystopia canthorum), yet type II (WS2) is not associated with this feature. In addition, WS1 and WS2 are known to be caused by alterations (mutations) of different genes. Another form, known as type III (WS3), has been described in which characteristic facial, eye (ocular), and hearing (auditory) abnormalities may be associated with distinctive malformations of the arms and hands (upper limbs). A fourth form, known as WS4 or Waardenburg-Hirschsprung disease, may be characterized by primary features of WS in association with Hirschsprung disease. The latter is a digestive (gastrointestinal) disorder in which there is absence of groups of specialized nerve cell bodies within a region of the smooth (involuntary) muscle wall of the large intestine.

In most cases, Waardenburg syndrome is transmitted as an autosomal dominant trait. A number of different disease genes have been identified that may cause Waardenburg syndrome in certain individuals or families (kindreds).

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

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: 2/27/2009
Copyright 1987, 1988, 1989, 1993, 2000, 2003, 2009National Organization for Rare Disorders, Inc.

1995-2011 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.

Advertisement

See All News

Advertisement
  • Join
  • About iVillage
  • Message Boards
  • Contact Us
  • Advertising Info
  • Jobs
  • Sitemap
  • Terms of Service
  • Privacy Policy
  • AdChoices
© 2000-2013 iVillage Inc. All rights reserved. A Division of NBCUniversal