You are reading a NORD Rare Disease Report Abstract. NORD’s full collection of reports on over 1200 rare diseases is available to subscribers (click here for details). We are now also offering two full rare disease reports per day to visitors on our Web site.
NORD is very grateful to Mario Vaccaro, MD, PhD, Aggregate Professor of Dermatology and Venereology, University of Messina, Institute of Dermatology, Policlinico Universitario, Via Consolare Valeria, Messina, Italy, for assistance in the preparation of this report.
Synonyms of Pachyonychia Congenita
- No synonyms found.
- pachyonychia congenita type 1 (PC-1)
- pachyonychia congenita type 2 (PC-2)
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.
Pachyonychia Congenita Resources
NORD Member Organizations:
(To become a member of NORD, an organization must meet established criteria and be approved by the NORD Board of Directors. If you're interested in becoming a member, please contact Susan Olivo, Membership Manager, at firstname.lastname@example.org.)
The information in NORD’s Rare Disease Database is for educational purposes only. It should never be used for diagnostic or treatment purposes. If you have questions regarding a medical condition, always seek the advice of your physician or other qualified health professional. NORD’s reports provide a brief overview of rare diseases. For more specific information, we encourage you to contact your personal physician or the agencies listed as “Resources” on this report.
The National Organization for Rare Disorders (NORD) web site, its databases, and the contents thereof are copyrighted by NORD. No part of the NORD web site, databases, or the contents may be copied in any way, including but not limited to the following: electronically downloading, storing in a retrieval system, or redistributing for any commercial purposes without the express written permission of NORD. Permission is hereby granted to print one hard copy of the information on an individual disease for your personal use, provided that such content is in no way modified, and the credit for the source (NORD) and NORD’s copyright notice are included on the printed copy. Any other electronic reproduction or other printed versions is strictly prohibited.
Copyright 2005, 2009, 2012
NORD's Rare Disease Information Database is copyrighted and may not be published without the written consent of NORD.