Cleidocranial dysplasia (say: clie-doh-CRAY-nee-ul diss-PLAY-zee-a) is a genetic condition that mainly affects:
The symptoms of CCD vary considerably from one person with CCD to another. This is true even of people in the same family who have CCD.
CCD is very rare and occurs in one in one million children worldwide. Both boys and girls can have CCD.
CCD is a disorder of bone development. The various problems of bone development include:
People with CCD lose their primary teeth (baby teeth) and get their secondary teeth (adult teeth) late. This causes overcrowding of teeth and mal-alignment of the jaw.
People with CCD can be shorter in height. The final height of boys is about six inches shorter than expected. For girls, the final height is about three inches shorter.
People with CCD are more likely to have other changes in their bones like:
People with CCD have a higher chance to develop osteoporosis (low bone density). The bone density is measured by a special test called a DEXA scan.
People with CCD often have recurrent chest, sinus and ear infections. Repeated ear infections may cause hearing loss.
Women with CCD are more likely to need a Caesarean section to give birth because they have a narrow pelvis and/or abnormally shaped pelvic bones.
Information taken from https://www.aboutkidshealth.ca/Article?contentid=879&language=English
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