While pericardial effusions might develop as a result of pericarditis, they are usually minor and rarely result in cardiac tamponade. Acute myocarditis can result from a focal or diffuse infection of the myocardium.Click to see full answer. In this regard, what is the difference between pericarditis and myocarditis?Myocarditis is the inflammation of the heart muscle and pericarditis is the inflammation of the lining outside the heart. In both cases, the body’s immune system is causing inflammation either to try to get rid of the infection or in response to some other trigger.Beside above, what causes endocarditis myocarditis and pericarditis? Viral infections are the most common cause of myocarditis and pericarditis. Viruses may infect the heart muscle tissue, causing acute or chronic immune responses from the body. Bacteria are the most common cause of endocarditis, which occurs when bacteria and blood cells form clumps, typically on the heart valves. Also, can pericarditis damage heart? Pericarditis Causes, Diagnosis, and Treatment. Pericarditis1? is a condition in which the pericardium (the protective elastic sac that encloses the heart), becomes inflamed. Often this inflammation is relatively mild and transient. But in some cases, pericarditis can lead to severe illness and even to cardiac damage.Can pericarditis cause heart murmur? Constrictive pericarditis Symptoms include unexplained weight loss, fatigue, breathlessness, swelling of the abdomen and heart murmurs. Without treatment, constrictive pericarditis can lead to a range of complications including: irregular heartbeat (heart arrhythmia) heart failure.