31 results
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 ... Pathophysiology #Rheumatology
Eosinophil Disorders Testing Algorithm
INDICATIONS FOR TESTING:
 • Peripheral blood eosinophilia/hypereosinophilia uncovered incidentally during medical evaluation or
Eosinophil Disorders ... Testing Algorithm ... evaluation or workup ... 1,500 cells/µL Workup ... #diagnosis #hematology
Pancytopenia - Workup and Differential Diagnosis Algorithm
Consumption Disorders
 1. Autoimmune Mediated Pancytopenia
 2. Splenic Sequestration
Peripheral Destruction
Pancytopenia - Workup ... Differential Diagnosis Algorithm ... Consumption Disorders ... Eating disorders ... #Hematology
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
Differential Diagnosis Algorithm ... cardiac valve, vasculitis ... Consider RBC membrane disorder ... #workup #hematology ... #testing
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Vasculitis and Vasculitides ... often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... against MPO • Complement ... differential #diagnosis #rheumatology
Petechiae/Purpura - Diagnostic Algorithm. Pathophysiology: 1) Represent the passage of erythrocytes from the intravascular to extravascular
Purpura - Diagnostic Algorithm ... trauma, infection, vasculitis ... ) or disorders of ... process such as vasculiitis ... #Diagnosis #Dermatology
Causes of Bleeding / Bruising - Differential Diagnosis Algorithm
Thrombocytopenia - Quantitative Defect
 • Decreased Production
 •
Differential Diagnosis Algorithm ... Sequestration Disordered ... Connective Tissue Disorders ... • Steroids • Vasculitis ... #Causes #Hematology
Pancytopenia - Workup and Differential Diagnosis Algorithm
Consumption Disorders
 1. Autoimmune Mediated Pancytopenia
 2. Splenic Sequestration
Peripheral Destruction
Pancytopenia - Workup ... Differential Diagnosis Algorithm ... Consumption Disorders ... Eating disorders ... #Hematology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Diagnosis and Workup ... smear, HIV/HCV testing ... or if a primary hematologic ... Diagnosis #Causes #Workup ... #hematology
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
hematological disorders ... to Autoimmune Disorders ... • Low serum C4 complement ... connective tissue disorder ... classification #rheumatology