• Karyn L Kassis, Kara J Wada, and Alana Milton.
• Division of Pediatric Emergency Medicine, Nationwide Children's Hospital, Columbus, Ohio.
• J Emerg Med. 2015 Jul 1;49(1):e15-7.

BackgroundInfants may present to the emergency department (ED) with vague complaints worrisome to parents and may initially appear well, despite serious underlying pathology. Whereas sepsis and nonaccidental trauma are high on most providers' diagnostic considerations, we report a case representative of a worrisome trend secondary to the refusal of parenteral vitamin K at birth leading to significant neurologic sequelae.Case ReportA 10-week-old boy presented to the ED with gradual increase in fussiness for 2 weeks and new onset of blood flecks in the stool on the day of presentation. Careful physical examination revealed a pale-appearing infant, leading to diagnostic evaluation demonstrating profound anemia and intracranial bleeding. The patient was diagnosed with late-onset vitamin K-deficient bleeding (VKDB) secondary to parental refusal of the vitamin K shot at birth. Why Should Emergency Physicians be Aware of This? Emergency Medicine providers need to add this serious treatable disease into their diagnostic consideration for fussy infants, infants with unexplained bruising or bleeding, or infants with new-onset seizures. Rapid identification of VKDB can lead to prompt treatment and halt the rapid progression of symptoms. Emergency Medicine providers should ask all parents if their infant received parenteral vitamin K in the newborn period, especially if they are exclusively breastfed or born out of the hospital.Copyright © 2015 Elsevier Inc. All rights reserved.

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