Case Presentation A 15-year-old female with a known history of Steinert’s myotonic dystrophy and primary nocturnal enuresis, for which she was taking daily desmopressin, presented to the pediatric emergency department with worsening abdominal symptoms. Presenting Complaints Seven-day history of progressively worsening abdominal pain Pain became markedly worse over the last 48 hours One episode of low-grade fever (maximum 38.8°C) She denied vomiting, diarrhea, trauma, urinary symptoms, respiratory complaints, or recent surgery Physical Examination Afebrile at the time of evaluation Pale appearance Generalized abdominal pain Maximal tenderness in the right abdominal quadrants Remainder of physical examination unremarkable Laboratory Findings Initial laboratory evaluation demonstrated: Leukocytosis: 17,450/µL with marked lymphocytosis (12,550/µL) Thrombocytosis: 451,000/µL Hypoalbuminemia:…