Table 1 ACR Criteria (1990) for the diagnosis of Takayasu’s arteritis

Age of onset ≤ 40 years

Claudication of the extremities: discomfort or muscle fatigue upon effort of at least one extremity, especially the upper limbs

Decrease of at least one brachial pulse

Asymmetry of at least 10 mm Hg of the

humeral systolic pressure

Murmur upon auscultation on a subclavian artery or on the abdominal aorta

Angiographic abnormalities (angio-CT and/or angio-MRI are the imaging modalities currently used): narrowing or occlusion on the aorta, its branches or the proximal arteries of the limbs, segmentalor focal, not related to the atherosclerosis or fibromuscular dysplasia