Giant cell arteritis (GCA) is the most common form of adult vasculitis in the United States and can be subdivided into those with cranial only symptoms, those with large vessel vasculiti/PMR, and those with mixed features. Non-invasive imaging is key in detecting large vessel involvement in GCA, as many of these patients do not experience signs or symptoms specific to this vascular disease (i.e.

Drs. Jack Cush & Arthur Kavanaugh, two of rheumatology’s most trusted voices, provide a breakdown of the latest breakthroughs and hottest topics in rheumatology from the 2025 ACR Convergence meeting in Chicago.

They say the easiest bit about GCA, like PMR, is the first week after you start steroids. Those fond memories belie the challenge of ongoing treatment in GCA. In a steroid-only world, there is only misery. Steroid-sparing therapies have changed this completely.

For the last several years, conversations about JAK inhibitors have often started and ended with safety. The shadow cast by ORAL Surveillance has made clinicians more cautious and regulators more restrictive. Yet in practice, many of us continue to reach for upadacitinib when we face challenges in treatment, from rheumatoid arthritis to axial spondyloarthritis. 

My favorite session at ACR Convergence is often the “Great Debate.” The debate this year also evaluated one of my favorite topics – ultrasound in giant cell arteritis (GCA). More specifically, it asked the question of whether biopsy or ultrasound should be the preferred modality for diagnosing GCA.