A Case of Dengue-Induced Myocarditis Leading to Pulmonary Edema

Dengue myocarditis is an uncommon but clinically important complication of dengue fever and may present with acute respiratory distress and dynamic changes in cardiac function. We report the case of a 33-year-old male who presented with high-grade fever and shortness of breath and was found to have pulmonary edema with an initially preserved left ventricular ejection fraction (LVEF). During the critical phase of dengue illness, repeat echocardiography demonstrated a marked but transient reduction in LVEF, consistent with dengue-induced myocarditis. With early recognition and supportive management, the patient achieved complete clinical and echocardiographic recovery. This case underscores the importance of serial cardiac evaluation in dengue patients presenting with unexplained dyspnea or pulmonary congestion.