Vasculitis and Vasculitides
Large Vessel Vasculitis: 
 • Takayasu, Giant cell arteritis (GCA)
Medium Vessel Vasculitis: 
 • Polyarteritis Nodosa, Kawasaki Disease
Small Vessel Vasculitis: 
 • ANCA Associated: Microscopic Polyangiitis, Eosinophilic Granulomatosis with Polyangiitis (EGPA), Granulomatosis with Polyangiitis (GPA)
IMMUNE COMPLEX VASCULITIS: Henoch Schonlein Purpura (IgA vasculitis), AntiGBM, Cryoglobulinemic Vasculitis, Hypocomplementenemic Urticarial Vasculitis
 • Others: Lupus Vasculitis, Drug associated, Levamisole associated, Hydralazine -induced ANCA-associated vasculitis
Variable-Vessel Vasculitis:
 • Behcet syndrome, Cogan syndrome
Lab tests:
 • CBC, LFT, ESR, ANA, Complement, Urinalysis, TSH, SPEP
 • ANCA
    - (C-ANCA) pattern antibodies directed against PR3
    - (P-ANCA) pattern is usually directed against MPO
 • Consider: Serologies for Cryoglobulins, HIV, HBV, HCV, ASO

#Vasculitis #Vasculitides #differential #diagnosis #rheumatology #classification