11 results
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... Post-strep GN, Lupus ... #Vasculitis #differential ... #diagnosis #algorithm ... #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... inflammation Others: • Lupus ... mucositis - Rash ... such as systemic lupus ... differential #diagnosis #rheumatology
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Clinical Features ... of Systemic Lupus ... Photosensitivity, Butterfly rash ... , Vasculitis, Purpura ... disease (30%): Glomerulonephritis
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... Diagnosis Algorithm ... Infection - Vasculitis ... (lupus, RA, Sjogren's ... #Causes #dermatology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... Rarely dominate the clinical ... Maculopapular rash ... pneumonia with glomerulonephritis ... #rash #diagnosis
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Systemic Lupus Erythematosus ... 40, F:M 9:1 • Clinical ... Manifestations: Malar rash ... Positive in 60-80% of cases ... #Summary #rheumatology
Staphylococcus-associated GlomeruloNephritis - Diagnosis and Management Summary
CLINICAL
 • Nephritic syndrome (Casts)
 • Marked proteinuria (may be
Staphylococcus-associated GlomeruloNephritis ... Summary CLINICAL ... Nephritic syndrome (Casts ... Leukocyturia • Vasculitic ... rash not uncommon
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
to 1:1 F:M • Clinical ... NPSLE rare, Malar rash ... Discontinuation of causal ... 40, F:M 9:1 • Clinical ... #diagnosis #management
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• They can cause ... Skin ulcers - Glomerulonephritis ... Cryoglobulins Cause ... Syndrome: • Clinical ... (e.g. systemic lupus
Drug Induced Lupus (DIL)
 • Epidemiology: -10% of all lupus cases, drug-dependent, 4:1 to 1:1 F:M
to 1:1 F:M • Clinical ... NPSLE rare, Malar rash ... Discontinuation of causal ... #DIL #rheumatology ... diagnosis #treatment #management