7 results
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
endocarditis, RMSF, and Henoch-Schönlein ... or purpuric rash ... lesions may have a vasculitis ... as autoimmune vasculitis ... #Purpuric #Rash
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... Rash - Differential ... Infection - Vasculitis ... Schonlein Purpura ... Vasculitis (lupus
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
• Pauci-immune vasculitis ... , Palpable purpura ... • Palpable purpura ... Diagnosis: Vasculitis ... polyangiitis • EGPA • Henoch-Schönlein
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• IgA vasculitis ... (Henoch-Schönlein ... small-vessel vasculitis ... • Vasculitis ... vasculitis
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Schonlein Purpura ... tract, and often causes ... mucositis - Rash ... #rheumatology # ... classification
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... IgA nephropathy, Henoch-SchonIein ... Purpura Anti-GBM ... #Vasculitis #differential ... #rheumatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... , mucositis • Rash ... often present) Henoch ... Schonlein Purpura ... ) • Palpable purpura