13 results
Lupus Nephritis Primer
Class I - Minimal Mesangial
Class II - Mesangial Proliferative
Class Ill - Focal Proliferative
Class IV
Lupus Nephritis ... #Nephritis #SLE ... Classification #Classes ... #differential #diagnosis ... #management #nephrology
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... Post-strep GN, Lupus ... Nephritis, Cryoglobulinemia ... #differential #diagnosis ... #algorithm #rheumatology
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
(SLE) - Diagnosis ... and Management ... nephritis, NPSLE ... Positive in 60-80% of cases ... #rheumatology
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
erythematosus (SLE ... (SPA) • Other Causes ... common bacterial causes ... Mycobacterial Causes ... #rheumatology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
cases, drug-dependent ... nephritis, NPSLE ... Positive in 60-80% of cases ... #table #rheumatology ... #diagnosis #management
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
disorders, or other causes ... Coagulation disorders CAUSES ... Quantity: • Primary Causes ... • Secondary Causes ... Gardner-Diamond syndrome CAUSES
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
proteinuria, rapidly progressing ... often causes arthritis ... LFT • ESR • ANA ... , and SLE) • Urinalysis ... #rheumatology #
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
) • Systemic lupus ... Anti-dsDNA (in 70% of cases ... in drug-induced SLE ... seen in 30—70% of cases ... #rheumatology #
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Diagnosis Framework ... diseases, such as SLE ... often causes arthritis ... - interstitial keratitis ... #Rheumatology
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
: • 1400 new cases ... • 75-90% of cases ... Abnormal in 50% of cases ... • Infectious causes ... #management #neurology