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- $Unique_ID{BRK04197}
- $Pretitle{}
- $Title{Rothmund-Thomson Syndrome}
- $Subject{Rothmund-Thomson Syndrome Poikiloderma Congenitale Syndrome
- Ectodermal Dysplasias }
- $Volume{}
- $Log{}
-
- Copyright (C) 1990 National Organization for Rare Disorders, Inc.
-
- 694:
- Rothmund-Thomson Syndrome
-
- ** IMPORTANT **
- It is possible that the main title of the article (Rothmund-Thomson
- Syndrome) is not the name you expected. Please check the SYNONYM listing to
- find the alternate names and disorder subdivisions covered by this article.
-
- Synonyms
-
- Poikiloderma Congenitale Syndrome
-
- Information on the following diseases can be found in the Related
- Disorders section of this report:
-
- Ectodermal Dysplasias
-
- General Discussion
-
- ** REMINDER **
- 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.
-
- Rothmund-Thomson Syndrome is an inherited skin disorder characterized by
- an abnormal redness of the skin (erythema) caused by congested capillaries.
- Eventually these capillaries may become obstructed.
-
- Symptoms
-
- Most individuals with Rothmund-Thomson Syndrome have small stature.
- Scarring, irregular red coloring of the skin, and a wasting away of tissue
- are also common. Thirty-five percent of those with this syndrome are overly
- sensitive to sunlight (photosensitivity), and 52% develop juvenile cataracts.
-
- Other symptoms may include underdeveloped teeth and nails, unusually
- small hands and feet, malformed or missing thumbs, sparse and prematurely
- gray hair, baldness, mental retardation, growth hormone deficiency, excessive
- thickening of the skin on the palms of the hands and soles of the feet
- (hyperkeratosis), and a weakening of the bones (osteoporosis).
-
- Changes in the skin usually become apparent between the ages of three
- months and one year. Over the next few years, these changes progress toward
- a patchy, irregular discoloration of the skin. Cataracts tend to develop
- between the ages of two and seven years.
-
- Causes
-
- Rothmund-Thomson Syndrome is an autosomal recessive inherited disorder.
- Human traits, including the classic genetic diseases, are the product of the
- interaction of two genes, one received from the father and one from the
- mother. In recessive disorders, the condition does not appear unless a
- person inherits the same defective gene for the same trait from each parent.
- If one receives one normal gene and one gene for the disease, the person will
- be a carrier for the disease, but usually will show no symptoms. The risk of
- transmitting the disease to the children of a couple, both of whom are
- carriers for a recessive disorder, is twenty-five percent. Fifty percent of
- their children will be carriers, but healthy as described above. Twenty-five
- percent of their children will receive both normal genes, one from each
- parent, and will be genetically normal.
-
- Affected Population
-
- Seventy percent of reported cases of Rothmund-Thomson Syndrome are female.
- The number of reported cases is small which means there is no way to
- determine whether the disorder actually affects more females than males.
-
- Related Disorders
-
- Symptoms of the following disorders can be similar to those of Rothmund-
- Thomson Syndrome. Comparisons may be useful for a differential diagnosis:
-
- Ectodermal Dysplasias are a group of hereditary, nonprogressive skin
- diseases characterized by eczema, poorly functioning sweat glands, sparse or
- abnormal hair follicles, abnormal or missing hair, disfigured nails and
- difficulties with the nasal passages and ear canals. Skin is satiny smooth,
- prone to rashes and slow to heal. (For more information on this disorder,
- choose "Ectodermal Dysplasia" as your search term in the Rare Disease
- Database.)
-
- Therapies: Standard
-
- Treatment of Rothmund-Thomson Syndrome is directed at symptoms. Dentures may
- be required in patients who lose their teeth. Visual impairment due to
- cataracts may require surgery. Retarded growth may be treated with growth
- hormone releasing factor. The drug etretinate may be administered for facial
- lesions and uneven pigmentation. Argon laser treatment may be used to shrink
- extremely dilated capillaries (telangiectasias). Genetic counseling may be
- of benefit for patients and their families. Other treatment is symptomatic
- and supportive.
-
- Therapies: Investigational
-
- This disease entry is based upon medical information available through July
- 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 Rothmund-Thomson Syndrome, please contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- National Foundation for Ectodermal Dysplasias
- P.O. Box 114
- Mascoutah, IL 62258
-
- 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
-
- MENDELIAN INHERITANCE IN MAN, 8th ed.: Victor A. McKusick; Johns Hopkins
- University Press, 1986. Pp. 1175.
-
- SMITH'S RECOGNIZABLE PATTERNS OF HUMAN MALFORMATION, 4th ed.: Kenneth
- Lyons Jones, M.D.; W. B. Saunders Company, 1988. Pp. 124-125.
-
-