A 45-year-old otherwise healthy man presents to the emergency department with an urticarial rash and vomiting after ingesting shellfish 1 hour prior. He is placed in a resuscitation room and epinephrine is administered intramuscularly. Shortly thereafter he develops chest pain and his ECG shows ST elevation in the anterolateral leads. He has no cardiac history, nor any risk factors. What diagnosis does this patient likely have?

About the Author: Anton Helman

Dr. Anton Helman is an Emergency Physician at North York General in Toronto. He is an Assistant Professor at the University of Toronto, Division of Emergency Medicine and the Education Innovation Lead at the Schwartz-Reisman Emergency Medicine Instititute. He is the founder, editor-in-chief and host of Emergency Medicine Cases.