The pericardium is a thin membrane that surrounds and protects your heart. This membrane helps prevent infection and also keeps your heart from expanding too much. Diseases and health problems can ...

Pericarditis is swelling of the pericardium, the sack-like membrane that contains the heart. Pericarditis can cause sharp pain in the chest. In most cases, pericarditis will pass without treatment. In ...

COVID-19 can trigger pericarditis, a type of heart inflammation, but this is quite rare. Symptoms include chest pain that comes on quickly or worsens when you breathe deeply or lie down. Pericarditis ...

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 ...