Children and adolescents with pulmonary hemorrhage are infrequently encountered in the emergency department (ED). We describe a case of a 16 year-old boy who presented to a pediatric ED with pulmonary hemorrhage and respiratory distress. The patient's unusual initial presentation resulted in the consideration of a broad differential diagnosis for his symptoms, including traumatic, neurological, respiratory, and toxicological causes. After resuscitation in the ED, a prolonged admission, and extensive testing, no cause could be found other than severe opioid toxicity. This case illustrates a rare, life-threatening presentation of opiod toxicity in a healthy adolescent and underlines the potentially serious nature of such exposures.