Phlegmasia Cerulea Dolens in the Pediatric Population: A Life-threatening Condition

BackgroundPhlegmasia cerulea dolens is a rare complication of deep venous thromboembolism that can have life-threatening consequences. It is more commonly reported in the adult population, and rarely in the pediatric population, especially in a healthy child.Case ReportWe report a case of a healthy 7-year-old girl who presented with right leg pain and fever, found to have a thrombus involving her inferior vena cava and right lower extremity.Why Should an Emergency Physician Be Aware of This?This case illustrates the importance of early recognition and a multimodal approach to treatment of phlegmasia cerulea dolens.