Dormant No More: Traumatic Rupture of a Liver Hydatid Cyst Causing Anaphylaxis.

Hydatid disease, caused by Echinococcus granulosus, commonly affects the liver. Traumatic cyst rupture is rare, and when complicated by anaphylaxis, it poses a life-threatening emergency. A 33-year-old male patient presented with severe abdominal and chest pain after falling from a height. Imaging revealed multiple hepatic hydatid cysts, one of which ruptured. Shortly after the CT scan, the patient developed hypotension, erythema, pruritus, and throat tightness consistent with anaphylaxis. He was treated with epinephrine, corticosteroids, antihistamines, oxygen, and intravenous fluids, stabilized, and admitted for further care. This case illustrates a rare but serious complication of hydatid cyst rupture after trauma. Prompt recognition and interventions are essential, particularly in endemic areas.