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Clinical features

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Angelman syndrome consists of:

  • severe mental retardation without speech
  • microcephaly
  • flat occiput - brachycephaly
  • jerky ataxic movements with broad based gait
  • smiling face
  • gales of inappropriate laughter

Other features include a protruded tongue, and often epilepsy.

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