Pericarditis is inflammation of the serous membrane, ie, the outer coat that surrounds the heart sac. It may be due to an infectious origin, or appear without apparent cause or after a general infection like pneumonia, tuberculosis ... All symptoms are cardiocirculatory from dyspnea heart failure, through oppression or symptoms of decompensation; and clinically manifested with choking and intense stabbing chest pain level. In many cases, it is generally a benign condition that refers to own treatment of the symptoms presented by the patient, but in exceptional cases, surgical treatment may be necessary. Pericarditis can give a very similar clinical cardiomyopathy but it is important to differentiate since the treatment is completely different.