IL6 and hereditary pheochromocytoma-paraganglioma: Although the effectiveness of nonsteroidal anti-inflammatory drugs [8, 10] and alpha-adrenergic receptor blockers [2, 6] in reducing inflammatory symptoms has been shown in some patients with IL-6-producing pheochromocytoma, our patient did not achieve fever remission through the use of both aspirin and doxazosin.