For the diagnosis of GCA the ACR classification criteria are still used, but are less helpful for classifying GCA without temporal arteritis.

Patients with predominantly cranial vs isolated extracranial GCA phenotypes present with different patterns of arterial involvement on 18F-FDG PET-CT scans.

Age and hypertension are associated with increased risks for cranial ischemic complications in GCA, while anticoagulant therapy may offer protective benefits.

For the diagnosis of GCA the ACR classification criteria are still used, but are less helpful for classifying GCA without temporal arteritis. Dotted rectangles indicate facultative investigations.