Overlapping Symptoms of COVID-19 and Giant Cell Arteritis: The Need for a Higher Degree of Suspicion for Diagnostic Differentiation

Giant cell arteritis (GCA) is a large cell vasculitis that can present with a plethora of symptoms affecting several different systems. Before the COVID-19 pandemic, diagnosis of GCA was straightforward since the list of differential diagnoses for this disease was relatively short. However, the development of a SARS-CoV-2 viral infection challenges this standard. COVID-19 is a viral illness that also can present with similar vascular symptoms as GCS and creates a substantial inflammatory reaction, similar to most vasculitis. We present a case of a patient who had developed GCA after recovering from a COVID-19 viral illness. This is a rare presentation of GCA in the setting of COVID-19, and recognition of the nuanced differences between the two diseases may significantly change a patient’s prognosis if not detected early.