Myocarditis is defined as an inflammatory cardiac muscular disease. The etiology is extremely heterogeneous, the causes varying from infective (bacterial, viral, etc) to non-infective (drugs, physical and biochemical agents, systemic inflammatory diseases, etc). [1] The prevalence of myocarditis is difficult to be estimated as most of them passes underdiagnosed or misdiagnosed. Dedicated, retrospective studies outlined a prevalence of 22 cases per 100,000 individual/years as incidence, [2] while autoptic studies revealed the occurrence of fatal acute myocarditis in 0.46 cases per 100,000 individuals/years [3] or, at least 0.53% prevalence within an Italian sample population (i.e.
