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diagnosis rheumatology differential management vasculitis comparison druginduced hematology sle table types allergy antiphospholipid apls champs cryoglobulinemia cryoglobulins dermatology dil erythematosus
Causes of Hypocomplementemia - CHAMPS Mnemonic C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis H - Heavy Chain deposition
Causes of Hypocomplementemia ... S - Systemic Lupus ... @AnnKumfer #Hypocomplementemia ... #Low #Complement
Drug Induced Lupus vs SLE Drug Induced Lupus (DIL): • Epidemiology: -10% of all lupus cases, drug-dependent,
• Immunologic Workup ... 90% - Low complement ... Discontinuation of causal ... • Immunologic Workup ... 80% - Low complement
Rapidly Progressive Glomerulonephritis (RPGN) RPGN has three primary pathophysiologic causes differentiated by immunofluorescence Immune Complex Mediated (granular staining):
pathophysiologic causes ... staining): • Low Complement ... Post-strep GN, Lupus ... Idiopathic • Normal Complement ... differential #diagnosis #algorithm
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Systemic Lupus Erythematosus ... , oral ulcers, Lupus ... • Immunologic Workup ... Positive in 60-80% of cases ... 80% - Low complement
Summary table of types of hypersensitivity reactions. Type 1 - Mediators: lgE - Antigen Form: Soluble
Allergen-specific lgE causes ... antigens, leading to complement ... they activate complement ... glomerulonephritis, Systemic lupus ... allergy #table #classification
Vasculitis and Vasculitides - Differential Diagnosis Framework When to Consider Vasculitis: • Purpura, ischemic skin lesions •
tract, and often causes ... inflammation Others: • Lupus ... such as systemic lupus ... against MPO • Complement ... #rheumatology #classification
Causes of Petechial Rash - Differential Diagnosis Algorithm Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... Differential Diagnosis Algorithm ... Autoimmune Vasculitis (lupus ... deficiency Work ... #Causes #dermatology
Cryoglobulinemia Summary Cryoglobulins: • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• They can cause ... Cryoglobulins Cause ... • Low serum C4 complement ... (e.g. systemic lupus ... diagnosis #types #classification
Drug Induced Lupus (DIL) • Epidemiology: -10% of all lupus cases, drug-dependent, 4:1 to 1:1 F:M
Drug Induced Lupus ... Epidemiology: -10% of all lupus ... • Immunologic Workup ... 90% - Low complement ... Discontinuation of causal
Antiphospholipid Syndrome (APLS) Testing - Hypercoagulable Workup Algorithm INDICATIONS FOR TESTING: • Vascular thrombosis
Hypercoagulable Workup ... Algorithm INDICATIONS ... maternal chromosomal causes ... excluded Testing: • Lupus ... #Algorithm #diagnosis
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