Chapel Hill Consensus Conference (CHCC) is a nomenclature system (nosology). It is neither a classification system that specifies what findings must be observed in a specific patient to classify that patient for clinical research nor a diagnostic system that directs clinical management.
vasculitis
ACR Criteria for the Classification of Hypersensitivity Vasculitis
Three of the following five criteria were required to meet American College of Rheumatology (ACR) classification criteria for hypersensitivity vasculitis:
Names and definitions of vasculitis adopted by the Chapel Hill Consensus Conference
Names and definitions of vasculitis adopted by the Chapel Hill Consensus Conference on the nomenclature of systemic vasculitis