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Definition:
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Acrodysostosis is an extremely rare disorder that is present at birth (congenital). It leads to problems with the bones of the hands, feet, and nose, and intellectual disability.
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Alternative Names:
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Arkless-Graham; Acrodysplasia; Maroteaux-Malamut
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Causes, incidence, and risk factors:
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Most patients with acrodysostosis have no family history of the disease. However, sometimes the condition is passed down from parent to child. Parents with the condition have a 1 in 2 chance of passing the disorder to their children.
There is a slightly greater risk with fathers who are older.
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Symptoms:
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- Frequent middle ear infections
- Growth problems, short arms and legs
- Hearing problems
- Mental deficiency
- Unusual looking face
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Signs and tests:
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Your health care provider can usually diagnose this condition with a physical exam.
This may show:
- Advanced bone age
- Bone deformities in hands and feet
- Delays in growth
- Problems with the skin, genitals, teeth, and skeleton
- Short arms and legs with small hands and feet
- Short head, measured front to back (brachycephaly)
- Short height
- Small, upturned broad nose with flat bridge
- Unusual features of the face (short nose, open mouth, jaw that sticks out)
- Unusual head
- Wide-spaced eyes (hypertelorism), sometimes with extra skin fold at corner of eye
In the first months of life, x-rays may show spotty calcium deposits, called stippling, in bones (especially the nose). Infants may also have:
- Abnormally short fingers and toes (brachydactyly)
- Early growth of bones in the hands and feet
- Short bones
- Shortening of the forearm bones near the wrist
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Treatment:
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Treatment depends on the symptoms.
Orthopedic care, early intervention, and special education are recommended.
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Expectations (prognosis):
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Problems depend on the degree of skeletal involvement and intellectual disability. In general, patients do relatively well.
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Calling your health care provider:
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Call your health care provider if your infant or child does not seem to be growing or developing properly.
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Prevention:
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Genetic counseling may be helpful.
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