The first incidence of myocarditis in a 31-year-old male infected with monkeypox has been reported in Portugal. The patient presented with a five-day history of fever, myalgia malaise, and swollen and umbilicated skin lesions on his hands, face, and genitalia. A PCR test confirmed the monkeypox infection . After three days, the patient returned to the hospital with chest tightness that radiated to the upper left extremity.

The cardiac magnetic resonance imaging showed signs of myocardial edema, necrosis, myocardial gadolinium accumulation, and expanded myocardial volume, confirming the myocardial inflammation. The patient was discharged after a week of supportive care and has fully recovered. The case highlights cardiac involvement to be a potential complication of monkeypox. Understanding the causal relationship can help monitor affected patients to better recognize myocarditis and…