10 results
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Vesicopustule on erythematous ... Sarcoidosis • GPA ... lesions • Discoid lupus ... erythematosus ... differential #diagnosis #rheumatology
Classification of Vasculitis 
Vasculitis of large vessels 
 - Arteritis temporalis (giant-cell arteritis) 
 - Takayasu
Classification of ... - systemic lupus ... erythematosus ... dermatomyositis #Size #Classification ... #Diagnosis #Rheumatology
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
Cell Arteritis (GCA ... ANCA associated vasculitis ... (RA), Systemic lupus ... erythematosus ( ... Differential #Diagnosis #rheumatology
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
Skin Disease Classification ... Non-autoimmune rheumatologic ... Malignancy (e.g. hematologic ... vein thrombosis Hematologic ... #Diagnosis #Rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
and branches • GCA ... erythematosus, ... purpura: strong sign ... differential #diagnosis #rheumatology ... #classification
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Features of Systemic Lupus ... Butterfly rash, Vasculitis ... SLE #systemic #erythematosus ... #signs #symptoms ... #diagnosis #rheumatology
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Post-strep GN, Lupus ... ANCA (C-ANCA): GPA ... Glomerulonephritis #Vasculitis ... differential #diagnosis #algorithm ... #rheumatology
Papulosquamous Skin Rash - Differential Diagnosis Algorithm
Erythrematous or violaceous papules & plaques with overlying scale
 •
Erythrematous ... Auspitz sign, Koebner's ... flat-topped) papules on wrists ... soles • Discoid Lupus ... Erythematous -
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
- GPA, EGPA, microscopic ... (e.g. systemic lupus ... erythematosus ( ... diagnosis #types #classification ... #rheumatology #
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
purpura: Strong sign ... Elevated ESR and CRP GCA ... develop in pts with GCA ... ischemia • Skin: Erythematous ... Differential #Diagnosis #Rheumatology