Abstract
Hydatid disease is a rare parasitic infestation that can cause a life threatening anaphylactic shock secondary to spontaneous rapture. The parasite cysts are not uncommon in Saudi and few were previously reported. However, anaphylactic shock due sudden rupture of the cyst is not common to occur and has been very rarely reported in the literature. Our case describes a 52-year-old Saudi female presenting at the emergency department with a sudden generalized abdominal pain associated with signs of shock. After stabilization of the patient's blood pressure, she was sent for abdominal Computed Topography (CT) scan for appropriate diagnosis. The patient status was improved with resuscitation and excision of the ruptured cyst. This case emphasizes the importance of considering hydatid disease as a differential diagnosis in shock cases especially if the case is in an endemic area. Spontaneous rupture with anaphylaxis is rare to occur, and there do not seem to be any similar reported cases from Saudi prior to this. In addition, it is crucial to constantly provide regular updates on the disease especially in endemics areas.