Application of the Yamaguchi criteria for classification of “suspected” systemic juvenile idiopathic arthritis (sJIA)

Abstract

Patients with sJIA can have a significant period during their course (particularly at onset) when they do not have arthritis. The Yamaguchi criteria may be useful in this subset of patients in the "pre-arthritic" phase of the disease. Future criteria should incorporate the strengths of both, the Yamaguchi and the ILAR criteria.