Abstract
Hyperglycemic hyperosmolar syndrome (HHS), which is characterized by marked elevations in serum glucose concentrations and hyperosmolality without significant ketosis, has been rarely reported in children. However, the incidence of this disorder in children is increasing with the rise of frequently reported cases describing HHS in children. We report a 7-year-old male patient who presented with HHS with a new diagnosis of type 1 diabetes mellitus complicated by hypernatremic dehydration. The patient had a good outcome, discharged home within 7 days.