Table 1 Assessments used in the 2022 ACR/EULAR GCA classification criteria and the modified version in this study
2022 ACR/EULAR GCA classification criteria | Modified ACR/EULAR GCA classification criteria in the present study | Score |
|---|---|---|
Absolute requirement | ||
Age 50 years at time of diagnosis | Unmodified | |
Additional clinical criteria | ||
Morning stiffness in the shoulders/neck | PMR | + 2 |
Sudden visual loss | Sudden visual abnormalities or visual loss | + 3 |
Jaw or tongue claudication | Jaw claudication | + 2 |
New temporal headaches | New headaches not explained by other diseases | + 2 |
Scalp tenderness | Unmodified | + 2 |
Abnormal examination of the temporal artery | Unmodified | + 2 |
Laboratory, imaging, and biopsy criteria | ||
Maximum ESR ≥ 50 mm/hour or maximum CRP ≥ 10 mg/L | Unmodified | + 3 |
Positive temporal artery biopsy or halo sign on temporal artery Ultrasound | Positive temporal artery biopsy | + 5 |
Bilateral axillary involvement | Unmodified | + 2 |
FDG‐PET activity throughout Aorta | Wall thickening or aneurysm on CT/CTA or MRI/MRA, and/or PET-CT activity throughout the aorta | + 2 |