[Myocarditis in 2020].

Myocarditis is an inflammatory disease of the myocardium caused by various etiologies with a dominance of viral infections and potential post-infectious autoimmunity. The clinical presentation ranges from chest pain to severe complications including cardiogenic shock, ventricular arrhythmias, and progression to dilated cardiomyopathy. The diagnostic approach is challenging and includes several investigations, such as an ECG, an echocardiography, troponin testing and the exclusion of coronary artery disease. Although endomyocardial biopsy remains the gold standard, cardiovascular magnetic resonance is now the most valuable tool to accurately characterize myocardial tissue inflammation. The management is mainly symptomatic and consists in early detection and treatment of complications including heart failure and arrhythmias.