Clinical classification of @entity1333 is needed to facilitate diagnosis and management of the disease as well as to assign @entity1 to defined groups for clinical studies. Caliber and size of the vessels predominantly involved strongly influence the clinical features of the different forms of @entity1333 and therefore are one major criterion for classification. As such, panarteritis nodosa involves medium-sized vessels and presents on the skin with subcutaneous nodules and @entity41887 , while it does not cause @entity631 . @entity3144 ( @entity3144 ) involves the small vessels, resulting in palpable @entity4125 , and sometimes also in @entity631 . The classification systems of the American College of Rheumatology (ACR) and of the Chapel Hill Consensus Conference (CHCC) have gained wide acceptance. Yet, they need to be updated, especially with regard to @entity3144 , the most common @entity1333 . Here distinctions must be made for prognostic, diagnostic and therapeutic reasons between IgG/IgM- and IgA-associated @entity3144 ( @entity5417 , HSP), as well as between HSP of @entity1 and HSP of adult age. The latter bears the highest, while IgG/IgM-associated @entity3144 bears the lowest risk for complications. This update on the clinical classification of vaculitis is based on the ACR and CHCC system and focuses on those forms which regularly cause cutaneous symptoms. It provides a survey on the @entity751 and should help in deciding when i) extensive diagnostic procedures are needed in @entity1 with @entity3144 , ii) therapy should be less or more aggressive, e.g. in cutaneous versus systemic PAN, iii) therapy should be promptly initiated, e.g. when any form of severe, @entity19417 is suspected.

Clinical classification of XXXX .

@entity1 :: ('9606', 'Species') :: ['children', 'patients'] @entity1333 :: ('MESH:D014657', 'Disease') :: ['vasculitis of the skin', 'vasculitis'] @entity41887 :: ('MESH:D065148', 'Disease') :: ['livedo racemosa'] @entity4125 :: ('MESH:D011693', 'Disease') :: ['purpura'] @entity5417 :: ('MESH:D011695', 'Disease') :: ['Henoch-Schoenlein purpura'] @entity751 :: ('MESH:D013577', 'Disease') :: ['vasculitic syndromes'] @entity3144 :: ('MESH:C535509', 'Disease') :: ['Leukocytoclastic vasculitis', 'LcV'] @entity631 :: ('MESH:D005921', 'Disease') :: ['glomerulonephritis'] @entity19417 :: ('MESH:D056648', 'Disease') :: ['ANCA-associated vasculitis']
@entity1333 :: (MESH:D014657,Disease) :: ['vasculitis']
