13 results
Seronegative Inflammatory Arthritis - Differential Diagnosis
 • Seronegative Rheumatoid Arthritis 
 • Infectious Arthritis: Viral, Bacterial,
Disease: Systemic Lupus ... Erythematous, Systemic Vasculitis ... Undifferentiated UCSD ... Differential #Diagnosis #rheumatology
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Features of Systemic Lupus ... Sjögrens (15%) Skin ... Butterfly rash, Vasculitis ... erythematosus #signs ... symptoms #diagnosis #rheumatology
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Skin Conditions ... Hypersensitivity vasculitis ... Antiphospholipid-antibody syndrome • Vasculitis ... lesions • Discoid lupus ... differential #diagnosis #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Purpura, ischemic skin ... inflammation Others: • Lupus ... such as systemic lupus ... purpura: strong sign ... differential #diagnosis #rheumatology
Lupus (SLE): Mucocutaneous Manifestations

 • Langerhan cells and keratinocytes release cytokines -> localized inflammatory response ->
Lupus (SLE): Mucocutaneous ... Subacute cutaneous lupus ... inflammation on skin ... Livedo Reticularis, Vasculitis ... pathophysiology #diagnosis #signs
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
- Purpura - Skin ... reticularis & skin ... (e.g. systemic lupus ... classification #rheumatology ... #vasculitis
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
3rd Decade Skin ... ANCA-associated vasculitis ... Non-autoimmune rheumatologic ... Seizures • Strokes Skin ... Erythematosus #Diagnosis #Rheumatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Purpura, ischemic skin ... purpura: Strong sign ... cmpkx deposits skin ... : • Skin lesions ... Differential #Diagnosis #Rheumatology
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
, small-vessel vasculitis ... response to local skin ... test (this is a skin ... diagnosis #management #signs ... #symptoms #rheumatology
Sweet Syndrome

Acute febrile neutrophilic dermatosis (Sweets Syndrome) is a skin condition characterized by fever and inflamed
Syndrome) is a skin ... inflamed or blistered skin ... Episcleritis Signs ... Leukocytoclastic vasculitis ... ’s syndrome - Lupus