Telling story of myocarditis is characterized by discoveries and inventions. The invention of the microscope opened new avenues in medicine, with the observation of myocardial inflammation by Carl Ludwig Alfred Fiedler. Rudolph Virchow discovered that cells are the elementary units. Karl Albert Ludwig Aschoff first reported rheumatic pancarditis. Gilbert Dallford found enterovirus in the faeces of children, who died suddenly in the village of Coxsackie. Werner Forssmann entered in his own right ventricle with a urologic catheter via the left radial vein. Endomyocardial biopsy, via the femoral or jugular veins, made possible to take away myocardial samples