8 results
Pathophysiology of Hypocomplementemic Urticarial Vasculitis

C1q/anti-C1q antibiody ->
Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Pathophysiology of Hypocomplementemic ... Complex Formation - Complement ... TerrierBen #Hypocomplementemic ... Pathophysiology #Rheumatology
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Causes of Hypocomplementemia ... @AnnKumfer #Hypocomplementemia ... #Low #Complement ... #differential #hematology
IgG4-Related Disease
Clinical history:  Man, 60 years, multiorgan involvement, unique or multiple inflammatory pseudotumor
4 phenotypes:
 •
pseudotumor 4 phenotypes ... rheumatoid factor), ± hypocomplementemia ... diagnosis #management #phenotypes ... #workup #treatment ... #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... against MPO • Complement ... differential #diagnosis #rheumatology
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
Differential Diagnosis Algorithm ... disease (diverse genotypes ... Differential #Diagnosis #Algorithm ... #workup #hematology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
• Immunologic Workup ... - ANA > 95% (IgG ... 90% - Low complement ... • Immunologic Workup ... 80% - Low complement
Antiphospholipid Syndrome (APLS) Testing - Hypercoagulable Workup Algorithm
INDICATIONS FOR TESTING:
 • Vascular thrombosis
Hypercoagulable Workup ... Algorithm INDICATIONS ... Hypercoagulable #Workup ... #Algorithm #diagnosis ... #hematology
Drug Induced Lupus (DIL)
 • Epidemiology: -10% of all lupus cases, drug-dependent, 4:1 to 1:1 F:M
• Immunologic Workup ... - ANA > 95% (IgG ... 90% - Low complement ... DrugInduced #Lupus #DIL #rheumatology