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Myocarditis and pericarditis are types of heart inflammation. Myocarditis affects the middle layer of heart muscle, and pericarditis only affects the heart’s outer lining. Myocarditis and pericarditis ...

Myocarditis refers to inflammation of your heart muscle. It’s often caused by a bacterial or viral infection. Myocarditis is a disease where the heart muscle, known as the myocardium, becomes inflamed ...