Down Syndrome

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What is Down syndrome?

Down syndrome is a genetic disorder and the most common autosomal chromosome abnormality in humans, where extra genetic material from chromosome 21 is transferred to a newly formed embryo. These extra genes and DNA cause changes in development of the embryo and fetus resulting in physical and mental abnormalities. Each patient is unique and there can be great variability in the severity of symptoms.

Medically Reviewed by a Doctor on 10/31/2013

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Down Syndrome - Symptoms Question: What Down syndrome symptoms does your child exhibit?
Down Syndrome - Tests Question: Did you have special screening tests for Down syndrome during your pregnancy?
Down Syndrome - Causes Question: What caused your Down syndrome?
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Down Syndrome Causes and Symptoms

Down syndrome is a genetic disorder in which, most often, a third copy of chromosome 21 is present in cells because of an abnormal cell division when the egg and sperm first meet. As such, it is not truly a disease or illness that is curable or preventable but rather a lifelong challenge for patient and family to maximize quality of life.


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