Myocarditis describes any inflammation that occurs within the heart muscle. It is induced by various infections which will include viruses like sarcoidosis, and distinct immune diseases. The most prevalent form of infection is the viral kind that assaults the heart muscle resulting in local inflammation.
Pericarditis is a disease that causes inflammation of the pericardium. The pericardium is the fluid sac that envelopes the heart. It provides lubrication to the heart thus decreasing friction during activity and also firmly secures the heart to the surrounding walls within the cavity.