home *** CD-ROM | disk | FTP | other *** search
- $Unique_ID{BRK04111}
- $Pretitle{}
- $Title{Pityriasis Rubra Pilaris}
- $Subject{Pityriasis Rubra Pilaris Devergie Disease Lichen Acuminatus Lichen
- Psoriasis Lichen Ruber Acuminatus Pityriasis Pilaris Lichen Planus Pityriasis
- Rosea Psoriasis}
- $Volume{}
- $Log{}
-
- Copyright (C) 1988, 1989 National Organization for Rare Disorders, Inc.
-
- 475:
- Pityriasis Rubra Pilaris
-
- ** IMPORTANT **
- It is possible the main title of the article (Pityriasis Rubra Pilaris)
- is not the name you expected. Please check the SYNONYMS listing on the next
- page to find alternate names, disorder subdivisions, and related disorders
- covered by this article.
-
- Synonyms
-
- Devergie Disease
- Lichen Acuminatus
- Lichen Psoriasis
- Lichen Ruber Acuminatus
- Pityriasis Pilaris
-
- Information on the following disorders may be found in the Related
- Disorders section of this report:
-
- Lichen Planus
- Pityriasis Rosea
- Psoriasis
-
- General Discussion
-
- ** IMPORTANT **
- The information contained in the Rare Disease Database is provided for
- educational purposes only. It should not be used for diagnostic or treatment
- purposes. If you wish to obtain more information about this disorder, please
- contact your personal physician and/or the agencies listed in the "Resources"
- section of this report.
-
- Pityriasis Rubra Pilaris is a mildly itchy chronic skin disorder which is
- possibly caused by an inherited metabolic defect. Initially, the disorder is
- characterized by elevated spots (papules) on the skin. These spots grow and
- become connected, producing red plaques over large areas.
-
- Symptoms
-
- Pityriasis Rubra Pilaris is initially characterized by skin lesions described
- as mildly itchy, sharply pointed, horn-like, brownish-red to rosy yellow-
- colored papules. These papules usually occur on the back of the wrists, the
- outside of the forearms, underarm folds, elbows, knees, backs of the hands,
- and fingers. When the papules grow and connect together they produce dry,
- scaly, rough, red plaques over large areas of the skin. Gray, brittle nails
- and excessive oiliness of the glands on the scalp (seborrhea) and face may
- also occur. Often the edge of the eyelids are turned outward (ectropion).
-
- Causes
-
- Pityriasis Rubra Pilaris is suspected to be a hereditary disorder transmitted
- as a autosomal dominant trait. Symptoms may be triggered by a metabolic
- defect. An acquired form of the disease also exists which may be caused by a
- deficiency of vitamin-A. (Human traits including the classic genetic
- diseases, are the product of the interaction of two genes for that condition,
- one received from the father and one from the mother. In dominant disorders,
- a single copy of the disease gene (received from either the mother or father)
- will be expressed "dominating" the normal gene and resulting in appearance of
- the disease. The risk of transmitting the disorder from affected parent to
- offspring is 50% for each pregnancy regardless of the sex of the resulting
- child.)
-
- Affected Population
-
- Pityriasis Rubra Pilaris is a rare disorder which affects children and
- adults. Males and females are affected in equal numbers.
-
- Related Disorders
-
- Symptoms of the following disorders can be similar to those of Pityriasis
- Rubra Pilaris. Comparisons may be useful for a differential diagnosis:
-
- Lichen Planus is a recurrent, itchy, inflammatory eruption characterized
- by small separate, angular spots that may combine into rough scaly patches.
- It is often accompanied by lesions in the mouth. Women are most commonly
- affected, although some cases have begun during childhood. The exact cause
- of this disorder is unknown, though some minerals such as bismuth, arsenic,
- gold, or exposure to certain chemicals used in developing color photographs
- may cause an eruption indistinguishable from Lichen Planus. (For more
- information on this disorder, choose "Lichen Planus" as your search term in
- the Rare Disease Database.)
-
- Pityriasis Rosea is a self-limited, mild, inflammatory skin disorder
- characterized by scaly lesions found most commonly on the trunk. The
- disorder is possibly due to an unidentified infectious agent. It may occur
- at any age but is seen most frequently in young adults. In temperate
- climates, incidence is highest during spring and autumn.
-
- Psoriasis is a common chronic and recurrent skin disorder characterized
- by dry, well-circumscribed silvery gray scaling spots (papules) or plaques on
- the scalp, elbows, knees and/or the buttocks. (For more information on this
- disorder, choose "Psoriasis" as your search term in the Rare Disease
- Database.)
-
- Therapies: Standard
-
- Pityriasis Rubra Pilaris may respond to treatment with vitamin-A, either
- orally or in alcohol as an ointment. Retinoid drugs such as isotretinoin
- which are chemically related to vitamin A, and the antineoplastic drug
- methotrexate may also be prescribed. The lesions often get better or worse
- without treatment, waxing and waning naturally.
-
- DDAVP in the injectable form is standard treatment for von Willebrand
- Disease. It is an antidiuretic peptide manufactured by Rorer
- Pharmaceuticals.
-
- Therapies: Investigational
-
- Research on Pityriasis Rubis Pilaris is being conducted at New York
- University Medical Center. For information about this research, please
- contact:
-
- Irwin M. Freedberg, M.D.
- NYU Medical Center
- Dept. of Dermatology
- 550 First Ave.
- New York, NY 10016
- (212) 340-5245
-
- This disease entry is based upon medical information available through
- January 1990. 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.
-
- Resources
-
- For more information on Pityriasis Rubra Pilaris, please contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- Foundation for Ichthyosis and Related Skin Types (F.I.R.S.T.)
- P.O. Box 20921
- Raleigh, NC 27619-0921
- (919) 782-5728
- (800) 545-3286
-
- The National Arthritis and Musculoskeletal and Skin Diseases Information
- Clearinghouse
- Box AMS
- Bethesda, MD 20892
- (301) 495-4484
-
- For genetic information and genetic counseling referrals, please contact:
-
- March of Dimes Birth Defects Foundation
- 1275 Mamaroneck Avenue
- White Plains, NY 10605
- (914) 428-7100
-
- Alliance of Genetic Support Groups
- 35 Wisconsin Circle, Suite 440
- Chevy Chase, MD 20815
- (800) 336-GENE
- (301) 652-5553
-
- References
-
- CHILDHOOD-ONSET PITYRIASIS RUBRA PILARIS WITH IMMUNOLOGIC ABNORMALITIES: D.
- Shvili, et al.; Pediatr Dermatol (May 1987: issue 4(1)). Pp. 21-23.
-
- PITYRIASIS RUBRA PILARIS, VITAMIN A AND RETINOL-BINDING PROTEIN: A CASE
- STUDY: P.C. van Voorst Vader, et al.; Acta Derm Venereol (Stockholm) (1984:
- issue 64(5)). Pp. 430-432.
-
- ISOTRETINOIN TREATMENT OF PITYRIASIS RUBRA PILARIS: C.H. Dicken; Journal
- Am Acad Dermatol (February 1987: issue 16(2 Part 1)). Pp. 297-301.
-
-