1. Age of 40 years or younger at disease onset
2. Claudication of the extremities
3. Decreased pulsation of one or both brachial arteries
4. Difference of at least 10 mm Hg in systolic blood pressure between arms
5. Bruit over one or both subclavian arteries or the abdominal aorta
6. Arteriographic narrowing or occlusion of the entire aorta, its primary branches, or large arteries in the upper or lower extremities that is not due to arteriosclerosis, fibromuscular dysplasia, or other causes
A diagnosis of Takayasu arteritis can be made with a sensitivity of 90.5% and specificity of 97.8% when a patient meets at least 3 of the 6 criteria.(5) A diagnosis of Takayasu arteritis can be made with a sensitivity of 90.5% and specificity of 97.8% when a patient meets at least 3 of the 6 criteria.(5)