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Aetiology

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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The most common cause of intellectual developmental disordersis idiopathic; ie no known cause. The number of idiopathic cases fluctuate with newer definitions of diseases. Other possible causes of mental retardation include:

  • genetic and metabolic disorders
  • gross disease of the brain and cranium
  • prenatal damage
  • perinatal
  • postnatal damage
  • social factors

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