7 results
Diagnosis and Management of Hypocomplementemic Urticarial Vasculitis (HUV)

Diagnosis of HUV
1) Chronic urticaria 
2) Leukocytoclastic vasculitis 
3)
Management of Hypocomplementemic ... (HUV) Diagnosis ... of HUV 1) Chronic ... 3) Hypocomplementemia ... TerrierBen #Hypocomplementemic
Pathophysiology of Hypocomplementemic Urticarial Vasculitis

C1q/anti-C1q antibiody ->
Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Pathophysiology of Hypocomplementemic ... Urticarial Vasculitis ... Complex Formation - Complement ... TerrierBen #Hypocomplementemic ... #HUV #Pathophysiology
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Causes of Hypocomplementemia ... A - Atypical HUS ... @AnnKumfer #Hypocomplementemia ... #Low #Complement
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
proteinuria, rapidly progressing ... often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... against MPO • Complement ... • HBV HCV
Pulmonary Renal Syndromes and Mimics - Differential Diagnosis Framework
Diffuse alveolar hemorrhage + rapidly progressive glomerulonephritis
90%:
 -
hemorrhage + rapidly progressive ... ANCA Associated Vasculitis ... anti-GBM) 10%: - Low Complement ... - Normal Complement ... , atypical HUS,
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Rapidly Progressive ... staining): • Low Complement ... RPGN #Rapidly #Progressive ... Glomerulonephritis #Vasculitis ... differential #diagnosis #algorithm
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
proteinuria, Rapidly progressing ... HTN • Check: HBV ... is 50 years • Progressive ... Elevated AST ALT • Hypocomplementemia ... ) • Hypocomplementemic