Patients with acute pericarditis should identify the cause of pericarditis and treat accordingly, rest in bed until chest pain and fever subside, administer analgesics for pain relief, and if pericardial effusion occurs, administer corticosteroids for patients who do not respond well to other medications for absorbing effusion. In cases of excessive pericardial effusion leading to acute cardiac tamponade, immediate pericardiocentesis and fluid drainage are necessary. For persistent recurrent pericarditis lasting over two years, and in patients who cannot be controlled with steroids, or those with severe chest pain, surgical pericardiectomy may be considered as a treatment option.