A Case of Transient Neonatal Diabetes MellitusHewes, Hilary A. MD; Dudley, Nanette C. MD; Adelgais, Kathleen M. MDPediatric Emergency Care: December 2010 - Volume 26 - Issue 12 - p 930-931 doi: 10.1097/PEC.0b013e3181fe91a4 Illustrative Cases Abstract Author Information We present a case of an 8-day-old infant boy with transient neonatal diabetes mellitus who presented to our emergency department with profound dehydration, failure to thrive, and hyperglycemia. The initial ill appearance of the patient required attention to a broad differential diagnosis including cardiac, metabolic, endocrine, and infectious processes. Transient neonatal diabetes mellitus is one of several causes of severe hyperglycemia in the neonatal period and is caused by genetic imprinting at the 6q24 region. It requires specific genetic testing for diagnosis. This case illustrates initial management of and recommended laboratory testing in neonates presenting with possible transient neonatal diabetes mellitus. From the Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Utah, Salt Lake City, UT. Reprints: Hilary A. Hewes, MD, Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Utah, Salt Lake City, UT (e-mail: firstname.lastname@example.org). © 2010 Lippincott Williams & Wilkins, Inc.