Influenza A infection as a potential trigger of giant cell arteritis: A case report.

Presenting as a large vessel vasculitis, giant cell arteritis (GCA) manifests with various symptoms, including fever, myalgias, headache, and jaw claudication. Although the precise pathogenesis of GCA remains incompletely elucidated, there is speculation about the involvement of environmental factors and infectious agents like bacteria and viruses in its development. Nevertheless, data on the potential link between influenza infection and GCA are limited. In this report, we present the case of an 88-year-old patient diagnosed with GCA following a severe influenza A infection.