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

Immune Complex Mediated (granular staining):
Normal Complement: IgA ... nephropathy, Henoch-SchonIein ... Glomerulonephritis #Vasculitis ... #differential # ... diagnosis #algorithm
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
the Skin - Differential ... Vessel: Petechiae, Palpable ... - GPA Cutaneous ... #skin #dermatology ... #rheumatology #differential
Palpable Purpura seen in Henoch Schonlein Purpura (HSP, IgA Vasculitis)

55 year old male on tuberculosis treatment
seen in Henoch ... Vasculitis) ... 55 year old male ... #Vasculitis #clinical ... #photo #dermatology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Rarely dominate the clinical ... • Petechiae, Palpable ... • Petechiae • Palpable ... reticularis Differential ... • Henoch-Schönlein
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Petechial Rash - Differential ... Diagnosis Algorithm ... infection - RMSF - Henoch ... RA, Sjogren's, GPA ... #Causes #dermatology
Dermatological semiology of Cutaneous Vasculitis 

Clinicopathologic correlations
 • Purpura, papules, pustules, necrosis: involvement of small vessels
: SLE +++ • IgA ... (5%): PAN > GPA ... #dermpath #dermatology ... lesions #diagnosis #clinical ... pathology #lesions #differential
Henoch Schonlein Leg Rash - Palpable Purpura
Purpura: Low Platelets or Vasculitis?
45 years old, seen in our
Tip: To differentiate ... Palpable = vasculitis ... purpura (IgA), ... Purpura #Legs #Rash #clinical ... #photo #dermatology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... • Ig A vasculitis ... - GPA - EGPA ... Vasculopathy #Purpura #Differential ... #nonpalpable #dermatology
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
Purpuric Rashes- THE ALGORITHMIC ... ; however, an algorithmic ... , the differential ... endocarditis, RMSF, and Henoch-Schönlein ... #Diagnosis #Dermatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
often present • Henoch ... Schonlein Purpura (IgA ... well as inner ear ... scleritis • Palpable ... Skin -> causing palpable