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Fragile X syndrome

Congenital disorders

Fragile X syndrome (FXS) is a genetic disorder. Symptoms often include mild to moderate intellectual disability. Physical features may include a long and narrow face, large ears, flexible fingers, and large testicles. About a third of those affected have features of autism such as problems with social interactions and delayed speech. Hyperactivity is common and seizures occur in about 10%. Males are usually more affected than females.

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  • General 

  • Signs and symptoms 

  • Causes 

  • Pathophysiology 

  • Diagnosis 

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