Giant cell arteritis (GCA) is the most frequent vasculitis in adults over 50 years. It is a granulomatous large-vessel vasculitis mainly involving the aorta and cranial arteries [1–3]. Clinical signs of GCA include nonspecific symptoms related to systemic inflammation such as asthenia and fever, and ischemic symptoms that are triggered by vascular remodeling of the affected arteries, leading to arterial stenosis [4] and ischemic complications such as headache, anterior ischemic optic neuropathy or stroke [5–7].