Updated: 3/22/2019

XYY Syndrome

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Introduction
  • Paternal nondisjunction (XYY)
  • Incidence 1:1000
  • Associated with
    • aggressive/antisocial/criminal behavior (1-2%)
    • normal sexual characteristics/function
    • small percentage diagnosed with autism spectrum disorders
Presentation
  • Physical exam 
    • very tall
    • severe acne

 

 

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