Down syndrome

Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21.... Wikipedia

  • Symptoms:  Delayed physical growth, characteristic facial features, mild to moderate intellectual disability
  • Causes:  Third copy of chromosome 21
  • Risk factors:  Older age of mother, prior affected child
  • Diagnostic method:  Prenatal screening, genetic testing
  • Treatment:  Educational support, sheltered work environment
  • Prognosis:  Life expectancy 50 to 60 years (developed world)
  • Data source:  DuckDuckGo
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