What causes mental retardation and simian crease? 2 possible conditions

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See a list of possible causes in order from the most common to the least.

1

Down Syndrome

Down syndrome is a genetic abnormality that occurs due to an extra copy of chromosome 21. It causes lifelong developmental delays that can range from moderate to severe. It cannot be cured but can be managed wit...

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2

Aarskog Syndrome

Aarskog syndrome is a very rare genetic disorder caused by a mutation on the X-chromosome that can affect a child's stature, facial features, genitalia, muscles, and bones. It primarily affects males.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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