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Pyoderma Gangrenosum

It is possible that the main title of the report Pyoderma Gangrenosum is not the name you expected.

Disorder Subdivisions

  • None

General Discussion

Pyoderma gangrenosum (PG) is an inflammatory skin disorder that is characterized by small, red bumps or blisters (papules or nodules) that eventually erode to form swollen open sores (ulcerations). The size and depth of the ulcerations vary greatly, and they are often extremely painful. In approximately 50 percent of cases, PG occurs secondary to another disorder such as inflammatory bowel disease. The exact cause of PG is unknown (idiopathic). Some researchers believe it may be an autoimmune disorder.


American Autoimmune Related Diseases Association, Inc.
22100 Gratiot Ave.
Eastpointe, MI 48021
Tel: (586)776-3900
Fax: (586)776-3903
Tel: (800)598-4668

Crohn's and Colitis Foundation of America
386 Park Avenue South
17th Floor
New York, NY 10016-7374
Tel: (212)685-3440
Fax: (212)779-4098
Tel: (800)932-2423

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
TDD: (301)565-2966

Erythema Nodosum Yahoo Support Group

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

AutoImmunity Community

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: 3/19/2012
Copyright 1988, 1989, 1992, 1995, 1997, 1998, 2000, 2006, 2009, 2012 National Organization for Rare Disorders, Inc.

WebMD Medical Reference from the National Organization for Rare Disorders

Last Updated: May 28, 2015
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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