17 results
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... Petechiae, Palpable purpura ... Petechiae • Palpable purpura ... Vesicles overlying purpuric ... Henoch-Schönlein purpura
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... purple, hemorrhagic skin ... OF NON-PALPABLE PURPURA ... Acute Infectious Purpura ... #rheumatology #
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Joint Pain Rash ... Palpable purpura ... Henoch Schönlein purpura ... Sarcoidosis • GPA ... differential #diagnosis #rheumatology
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Henoch-SchonIein Purpura ... involvement: Anti-GBM Disease ... Glomerulonephritis #Vasculitis ... differential #diagnosis #algorithm ... #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
: • Purpura, ischemic ... Henoch Schonlein Purpura ... erythematous nodules, purpura ... scleritis • Palpable purpura ... causing palpable purpura
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
the Skin - Differential ... Petechiae, Palpable purpura ... - GPA Cutaneous ... : • Behcet Disease ... #rheumatology #
Dermatological semiology of Cutaneous Vasculitis 

Clinicopathologic correlations
 • Purpura, papules, pustules, necrosis: involvement of small vessels
correlations • Purpura ... Connective tissue disease ... (5%): PAN > GPA ... 2%) • Other: IBD ... dermatology #semiology #signs
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
: • Purpura, ischemic ... scleritis • Palpable purpura ... Henoch Schonlein Purpura ... ) • Palpable purpura ... ) • Palpable purpura
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Differential Diagnosis Algorithm ... Henoch Schonlein Purpura ... : - Purpura fulminans ... RA, Sjogren's, GPA ... cryoglobulins • Skin
Henoch Schonlein Leg Rash - Palpable Purpura
Purpura: Low Platelets or Vasculitis?
45 years old, seen in our
Schonlein Leg Rash ... - Palpable Purpura ... 45 years old, seen ... later confirmed by skin ... #photo #dermatology