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A System for Vasculitides 

#Diagnosis #IM #Rheum #Vasculitis #Small #Medium #Large #Vessel #Size #Classification #ANCA #Differential
Rheum #Vasculitis #Small ... #Medium #Large ... #Vessel #Size #Classification ... #ANCA #Differential ... #Algorithm #Ddxof
Vasculitis - Break down based on vessel size 
Distribution of vessel involvement by large vessel vasculitis,
vessel vasculitis, medium ... vasculitis, and small ... basement membrane; ANCA ... #Rheumatology #Differential ... #Classification
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
abnormalities SMALL ... Associated - ANCA ... Hydralazine-Induced ANCA-Associated ... MEDIUM VESSEL ... #rheumatology #classification
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Findings: • Small ... Urticaria • Medium ... ulceration Small ... Vasculitis • ANCA ... Associated: -
Diagnosis and management of Polyarteritis Nodosa (PAN)

Chapel Hill 2012 definition: 
Necrotizing vasculitis ofmedium or small arteries
Necrotizing vasculitis ofmedium ... or small arteries ... venules, and not associated ... with ANCA FFS ... Management #Vasculitis #Differential
Classification of Vasculitis 
Vasculitis of large vessels 
 - Arteritis temporalis (giant-cell arteritis) 
 - Takayasu
Classification of ... Vasculitis of medium ... Vasculitis of small ... vessels - ANCA-associated ... dermatomyositis #Size #Classification
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... Vasculitis Differential ... primary condition MEDIUM ... and infarcts SMALL ... Associated / Pauci
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
Skin Disease Classification ... permanent alopecia Differential ... Diagnosis: • ANCA-associated ... inflammation of the small ... Malignancy Associated