title: The diagnosis and classification of Henoch-Schönlein purpura: an updated review.
abstract: Henoch-Schönlein purpura (HSP) is a common childhood systemic vasculitis with clinical characteristics of cutaneous palpable purpura, arthralgia/arthritis, bowel angina, and hematuria/proteinuria. HSP is identified mainly based on the above presentations. Combined with pathohistological findings of leukocytoclastic vasculitis (LCV) and IgA-immune deposits in vessel walls and/or glomeruli increase the diagnostic sensitivity and specificity. However, considering the accessibility of biopsy and some patients with atypical presentations, there are still medical unmet needs in HSP diagnosis. This article reviews the diagnosis of HSP including the aspects of classification criteria, differential diagnosis, and some laboratory findings as the biomarkers with diagnostic potential.
authors.affiliation: Department of Pediatrics, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan.
authors.forename: Yao-Hsu
authors.initials: YH
authors.lastname: Yang
authors.affiliation: Department of Pediatrics, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan.
authors.forename: Hsin-Hui
authors.initials: HH
authors.lastname: Yu
authors.affiliation: Department of Medical Research, National Taiwan University Hospital, Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan. Electronic address: gicmbor@ntu.edu.tw.
authors.forename: Bor-Luen
authors.initials: BL
authors.lastname: Chiang
mesh_terms: D001168:Arthritis / Q000175:diagnosis; D015415:Biomarkers / Q000097:blood; D003226:Congresses as Topic; D003245:Consensus Statements as Topic; D003937:Diagnosis, Differential; D006801:Humans; D011695:IgA Vasculitis / Q000097:blood / Q000175:diagnosis*
chemical_list: D015415:Biomarkers
keywords: Biomarker; Diagnostic criteria; Differential diagnosis; Henoch–Schönlein purpura