Prime-time hypoglycemia: factitious hypoglycemia during insulin-pump therapy.

Unexplained hypoglycemia in a pediatric diabetic patient can perplex even the savviest health care providers and lead to an extensive medical workup. We present here the cases of 2 children with type 1 diabetes mellitus treated with insulin pumps who were hospitalized for episodes of hypoglycemia. Review of their insulin pumps revealed normal basal and bolus insulin delivery. However, subsequent review of the priming history in the pump revealed that both children were receiving additional insulin under the manual-prime function, which is not included in the daily totals and, therefore, was initially unnoticed. Ultimately, both children confessed to surreptitiously using this priming function to self-administer extra insulin. It is important that health care professionals who are caring for diabetic patients be aware of this possibility.