Acrodysostosis
December 24, 2008 at 8:19 pm | In babies | Leave a CommentTags: abnormal, Acrodysostosis, babies, bone, bones, common, condition, degree, development, examination, facial, fashion, features, feet, gene, hand, jaw, learning, mental, mother, mouth, nose, older, parents, problem, responsible, routine, typical, ultrasound
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Acrodysostosis
This rare inherited condition affects the development of bones.
What causes it?
The gene responsible for acrodysostosis has not yet been identified and the condition may result from different genetic problems rather than one specific condition.
It appears to be inherited in an autosomal dominant fashion, and seems to be more common among older parents.
What are the symptoms?
People with acrodysostosis have certain bones that mature rapidly, before they’ve had enough time to grow fully. The bones most often affected are those of the nose and jaw, and the long tubular bones of the hands and feet.
This abnormal bone development results in a collection of characteristic features, including a typical facial appearance (short nose, open mouth and prominent jaw), small hands and feet.
Those with acrodysostosis often have some degree of mental retardation and learning difficulties.
What’s the treatment?
There’s no cure for acrodysostosis but appropriate support, especially for learning disabilities, is important.
Antenatal diagnosis may be made by ultrasound examination of the bones in babies whose mother has the condition, but routine screening isn’t done.
Achondroplasia
December 24, 2008 at 7:19 pm | In babies | Leave a CommentTags: A, Achondroplasia, arms, babies, baby, birth, child, development, gene, head, legs, pain, parent, percent, problem, result, surgery, Symptoms, treatment
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Achondroplasia
Achondroplasia is a disorder that causes abnormal formation of the bones, as a result of abnormal growth and development of cartilage.
What are the symptoms?
Achondroplasia is apparent at birth. A child with the condition has a relatively normal torso but short arms and legs, a larger head and prominent forehead.
What causes it?
Achondroplasia is caused by an abnormality in a gene located on chromosome 4, called fibroblast growth factor receptor (FGFR3).
Sometimes the child inherits achondroplasia from a parent who has the condition, but in about 80 per cent of cases the problem results from a new mutation of a gene.
Who’s affected?
About one in 20,000 children has achondroplasia. It affects all races. When inherited, it’s an autosomal dominant condition.
What’s the treatment?
There’s no cure for achondroplasia. Occasionally, surgery is carried out to increase height, but this can be complicated and painful.
Antenatal testing for the condition is available.
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