Myocarditis

Definition and Epidemiology Myocarditis is a heterogeneous group of inflammatory heart diseases characterized by myocardial inflammation in the absence of ischemic etiology, typically driven by immune-mediated mechanisms triggered by infectious, autoimmune, toxic, or idiopathic insults. Histopathologically, it meets the Dallas criteria: myocardial inflammation (lymphocytic, giant cell, eosinophilic, or other infiltrates) associated with cardiomyocyte injury or…