An atypical presentation of giant cell arteritis: Fatigable signs to anterior ischemic optic neuropathy and choroidal infarction.

Key Clinical Message: Prompt diagnosis and treatment of GCA are crucial to preserve vision. Because of this, new-onset ptosis or diplopia in elderly patients should warrant consideration of GCA, even in the absence of "classic" features, systemic symptoms or elevated inflammatory markers.

Abstract: Giant cell arteritis (GCA) is a vision-threatening, ophthalmic emergency that classically presents with new-onset headaches, scalp tenderness, systemic symptoms, visual disturbances, and elevated inflammatory markers.