Five clinical conundrums in the management of giant cell arteritis.

Clinicians who treat patients with giant cell arteritis (GCA) face many unresolved challenges. Visual loss still occurs in 15% to 20% of patients despite the availability of therapy for the disease that is generally effective. Aneurysm formation and large vessel stenosis are increasingly recognized complications. Substantial iatrogenic morbidity stems from glucocorticoid therapy, and recent trials have failed to identify an efficient steroid sparing agent. In this review, the authors address five major clinical conundrums in the management of GCA.