New classification criteria endorsed by ACR and EULAR have been developed for ANCA-associated vasculitis and large-vessel vasculitis to reflect modern imaging and laboratory advancements. Resources for Download

: A detailed presentation by Loïc Guillevin (Université Paris Cité).

Primarily affects medium arteries (e.g., Polyarteritis nodosa, Kawasaki disease).

: A clinical review focusing on the goals of classification for treatment.

Affects small vessels like intraparenchymal arteries, arterioles, capillaries, and venules. This category is often further divided by the presence of ANCA (Anti-Neutrophil Cytoplasmic Antibodies). Key Consensus Milestones

Standardized nomenclature based on vessel size and first distinguished between Polyarteritis nodosa and Microscopic polyangiitis.

Established by the American College of Rheumatology to distinguish between different types of vasculitis based on clinical and laboratory features. Chapel Hill Consensus Conference (CHCC):