Recurrent Vision Loss in a Patient with Giant Cell Arteritis while on High Dose Corticosteroids.

Giant cell arteritis (GCA) is a chronic vasculitis that can lead to permanent vision loss. In this case we describe a patient with permanent monocular vision loss from GCA, managed with long-term glucocorticoids, who presented with elevated erythrocyte sedimentation rate and acute visual loss. This patient was promptly given intravenous steroids, with initial improvement, however, she again experienced acute vision loss on the fourth day of treatment. Given the rare nature of this recurrent GCA-related vision loss during treatment, a broader workup was pursued without an alternative cause identified. Temporal biopsy was not performed due to concern of a false-negative in the setting of chronic steroid use. In this report we discuss the long-term monitoring and management of GCA, recurrence in the acute treatment setting, and present evidence related to diagnosis of GCA in the context of long-term steroid use.