22572 Health Library | Health and Wellness | Wellmont Health System
  • Aarskog Syndrome

    (Aarskog-Scott Syndrome; Faciodigitogenital Dysplasia or Syndrome; Faciogenital Dysplasia; Shawl Scrotum Syndrome)

    Definition

    Aarskog syndrome causes changes in the size and shape of certain bones and cartilage in the body. The face, fingers, and toes are most often affected. Aarskog syndrome is an extremely rare genetic disorder.

    Causes

    Aarskog syndrome is an inherited disorder. It is caused by a gene mutation on the X chromosome. It is passed from mothers to male children. (Female children can be affected by a milder form of the disease.)

    Risk Factors

    A risk factor is something that increases your chance of getting a disease or condition. This disorder mainly affects males.
    Those at risk of inheriting Aarskog syndrome are male children of:
    • Mothers who do not have the disorder, but who carry the gene for it

    Symptoms

    The main symptoms of Aarskog syndrome are:
    • Disproportionately short stature
    • Abnormalities of the head and face, including:
      • Rounded face
      • Wide-set eyes
      • Slightly slanted eyes
      • Drooping eyelids
      • Small nose
      • Front-facing nostrils
      • Underdeveloped mid-portion of the face
      • Wide groove above the upper lip
      • Crease below the lower lip
      • Folding of the top portion of the ear
      • Delayed teeth growth
      • In some cases, cleft lip or palate
    Cleft Lip
    Cleft lip
    Copyright © Nucleus Medical Media, Inc.
    Other symptoms may include:
    • A deformed scrotum
    • Undescended testicles
    • Small, wide hands and feet
    • Short fingers and toes
    • Mild webbing of fingers and toes, or crease in palm of hand
    • Mildly sunken chest
    • Navel that sticks out
    • Inguinal hernias
    • Ligament (connective tissue) problems, resulting in hyperextension of the knees
    • Mild mental deficiencies (in about one-third of those affected)
    • Attention deficit disorder
    Undescended Testicle
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    Copyright © Nucleus Medical Media, Inc.

    Diagnosis

    The doctor will ask about your symptoms and medical history. A physical exam will be done. The diagnosis of Aarskog syndrome is usually based on facial characteristics. It can be confirmed with genetic tests. X-rays of the face and skull can be used to help make a diagnosis.

    Treatment

    There is no known cure for Aarskog syndrome. Treatment is limited to surgical procedures to treat conditions caused by the disorder and supportive treatment. Orthodontic treatment is often needed.
    Treatment may include:

    Surgery

    Conditions that may be treated with surgery include:
    • Inguinal hernia
    • Cleft lip or palate
    • Undescended testicles

    Orthodontics

    In some cases, orthodontic treatment may help certain facial and dental abnormalities.

    Supportive Treatment

    Supportive treatment generally includes educational assistance to those afflicted with mental deficiencies. Parents often need advice and support.

    Prevention

    There is no known way to prevent Aarskog syndrome. If you have Aarskog syndrome or have a family history of the disorder, you can talk with a genetic counselor when deciding to have children.
    Researchers have located abnormalities in the FGD1 gene in people with this syndrome. Genetic testing for mutations in this gene is available.

    RESOURCES

    International Birth Defects Information Systems http://www.ibis-birthdefects.org

    National Organization for Rare Disorders http://www.rarediseases.org

    CANADIAN RESOURCES

    Canadian Paediatric Society http://www.cps.ca

    Health Canada http://www.hc-sc.gc.ca

    References

    Aarskog syndrome. National Organization for Rare Disorders website. Available at: http://www.rarediseases.org/search/rdbdetail%5Fabstract.html?disname=Aarskog%20Syndrome. Accessed October 26, 2012.

    Cleft lip and palate. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated August 17, 2012. Accessed October 26, 2012.

    Orrico A, Galli L, Faivre L, Clayton-Smith J,Azzarello-Burri SM, Hertz JM, Jacquemont S, et al. Aarskog–Scott Syndrome: Clinical Update and Report of Nine Novel Mutations of the FGD1 Gene. Am J Med Genet. Part A 152A:313–318.

    Pasteris NG, Nagata K, Hall A, Gorski J. Isolation, characterization and mapping of mouse Fgd3 gene, a new faciogenital dysplasia (FGD1; Aarskog Syndrome) gene homologue. Gene. 2000;242:237-247.

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