Pericarditis is an inflammation of the pericardium (the fibrous sac surrounding the heart). A characteristic chest pain is often present.
The causes of pericarditis are varied, including viral infections of the pericardium, idiopathic causes, uremic pericarditis, bacterial infections of the pericardium (e.g., Mycobacterium tuberculosis), post-infarct pericarditis (pericarditis due to heart attack; within 24-hours or if weeks-months after: Dressler's syndrome's).
Read more about Pericarditis: Classification, Signs and Symptoms, Treatment