It is a self-limiting disorder of healthy newborns.


  • Hypoxia during delivery
  • Post-trauma
  • Hypothermia
  • Calcium derangement


  • Well circumscribed and indurated lesions
  • The surface may look uneven and lobulated
  • Lesions are usually asymptomatic or mildly painful
  • Most common locations – back, buttock, cheeks


  • May last a few weeks to months


  • Blood may show high calcium levels in up to 10% of babies
  • If a skin biopsy is done, it shows fat crystals in the subcutaneous tissue


  • There is no treatment. They disappear in a few months.


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