Clinical Pearls and Myths in Vasculitis

Takayasu’s Arteritis: MythThis myth illustrates the fallacy of placing too much faith onclassification schemes that focus on the size of the bloodvessels typically involvedAlthough such schemes are useful, they must be regarded asguidelines rather than rulesTA is the prototype of large vessel vasculitides, and vesselslarger than 150 um are generally not found within the skin.