Frontal bossing

external

• Causes

  • Acromegaly
  • Achondroplasia
  • Rickets
  • Congenital syphilis
  • Thalassaemia
  • Sickle cell anaemia
  • Cranio-cleido dysostosis
  • Hurler syndrome
  • Russell-Silver syndrome
  • Pachydermoperiostosis
  • Trimethadione

• Parents

  • Face sign