Epidermolytic Hyperkeratosis

National Organization for Rare Disorders, Inc.

It is possible that the main title of the report Epidermolytic Hyperkeratosis 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.


  • Bullous Congenital CIE
  • BCIE
  • EHK
  • Bullous Congenital Ichthyosiform Erythroderma (of Brocq)

Disorder Subdivisions

  • None

General Discussion

Epidermolytic hyperkeratosis refers to hereditary skin disorders that are characterized by varying degrees of blistering and subsequent reactive scaling of the skin. Depending on the nature of the causative mutation, the symptoms may vary from mild blistering upon friction to severe erosions or widespread warty scaling ("porcupine man"). A palmoplantar keratoderma (excessive callus formation on palms and soles) and/or hair abnormalities may be present in some forms of the disorder. Rarely, EHK is part of a cardiocutaneous syndrome where cardiomyopathy and rhythm disturbances accompany the skin disorders (as for instance in Carvajal-Huerta syndrome).

A number of disorders show epidermolytic hyperkeratosis, including BCIE, ichthyosis bullosa Siemens and desmosomal disorders such as McGrath ectodermal dysplasia-skin fragility syndrome. Thus, in Europe, the term EHK is applied only to histopathological findings. However, in this entry, we follow American naming conventions and consider EHK synonymous with BCIE Brocq, a blistering disorder. In January 2009, an international ichthyosis consensus conference will hopefully end the confusion.


March of Dimes Birth Defects Foundation
1275 Mamaroneck Avenue
White Plains, NY 10605
Tel: (914)997-4488
Fax: (914)997-4763
Tel: (888)663-4637
Email: Askus@marchofdimes.com
Internet: http://www.marchofdimes.com

NIH/National Arthritis and Musculoskeletal and Skin Diseases Information Clearinghouse
1 AMS Circle
Bethesda, MD 20892-3675
Tel: (301)495-4484
Fax: (301)718-6366
Tel: (877)226-4267
TDD: (301)565-2966
Email: NIAMSinfo@mail.nih.gov
Internet: http://www.niams.nih.gov/Health_Info

Northwestern University Medical School
Department of Surgery
233 East Erie Street
Suite 100
Chicago, IL 60611
Tel: (312)943-5427

MUMS National Parent-to-Parent Network
150 Custer Court
Green Bay, WI 54301-1243
Tel: (920)336-5333
Fax: (920)339-0995
Tel: (877)336-5333
Email: mums@netnet.net
Internet: http://www.netnet.net/mums/

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
Email: ordr@od.nih.gov
Internet: http://rarediseases.info.nih.gov/Default.aspx

For a Complete Report

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

related physicians

related services

Bon Secours International| Sisters of Bon Secours USA| Bon Secours Health System

This information does not replace the advice of a doctor. Healthwise 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. Privacy Policy. How this information was developed to help you make better health decisions.