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pericarditis per·i·car·di·tis (pěr'ĭ-kär-dī'tĭs)
Inflammation of the pericardium.
inflammation of the pericardium, the membranous sac that encloses the heart. Acute pericarditis may be associated with a number of diseases and conditions, including myocardial infarction (heart attack), uremia (abnormally high levels of urea and other nitrogenous waste products in the blood), allergic disorders, and infections such as syphilis, rheumatic heart disease, tuberculosis, amebiasis (amebic dysentery), or histoplasmosis. However, most cases of pericarditis are idiopathic (of no obvious cause) and may be recurrent