Clinical criteria for diagnosis (noninvasive testing not necessary)
History of smoking
Onset prior to <50 years old
Absence of atherosclerotic risk factors
Upper limb involvement
Infrapopliteal arterial occlusive lesions
History of smoking
Onset prior to <50 years old
Absence of atherosclerotic risk factors
Upper limb involvement
Infrapopliteal arterial occlusive lesions
Thromboangiitis obliterans
Acute arterial ischemia
Polyarteritis nodosa
Atheroembolism 
Granulomatosis with polyangiitis
Arterial embolism
Takayasu arteritis
Arterial thrombosis