A 12-Day-Old Female with Hypothermia, Hypoglycemia and Hyperbilirubinemia.

A 12-day-old, full-term female, born small for gestational age, presented to the emergency department with a 1-week history of worsening hyperbilirubinemia, intermittent hypoglycemia, and episodic hypothermia. The baby's emergency department evaluation revealed transaminitis, pneumatosis intestinalis, indirect hyperbilirubinemia, and hypoglycemia. She was admitted to the ICU and received intravenous glucose, bowel rest, and phototherapy. Thyroid-stimulating hormone, thyroxine, and cortisol levels were low, and growth hormone was undetectable. The patient was hospitalized for a total of 19 days and was discharged from the hospital.