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Fragile X Syndrome: Condition Information

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What is Fragile X syndrome?

Fragile X syndrome is a genetic disorder that affects a person’s development, especially that person’s behavior and ability to learn. In addition, Fragile X can affect:
  • Communication skills
  • Physical appearance
  • Sensitivity to noise, light, or other sensory information

Fragile X syndrome is the most common form of inherited intellectual and developmental disability (IDD)

People with Fragile X syndrome may not have noticeable symptoms, or they can have more serious symptoms that range from learning disabilities to cognitive and behavior problems.


Last Updated Date: 11/30/2012
Last Reviewed Date: 10/29/2013