12 results
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Antiphospholipid-antibody ... syndrome • Vasculitis ... lesions • Discoid lupus ... #differential #diagnosis ... #rheumatology
Classification of Vasculitis 
Vasculitis of large vessels 
 - Arteritis temporalis (giant-cell arteritis) 
 - Takayasu
- systemic lupus ... syndrome - dermatomyositis ... #Vessels #Diagnosis ... #Rheumatology # ... Diagnosis
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
) • Systemic lupus ... Polymyositis and dermatomyositis ... ANCA-Associated Vasculitis ... Antineutrophil #antibodies #diagnosis ... #rheumatology #
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
Polymyositis / Dermatomyositis ... c-ANCA - Vasculitis ... Endomyseal antibody ... #diagnosis #table ... #rheumatology #
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
or Anti-NucIear Antibody ... , Drug-induced Lupus ... , Polymyositis/Dermatomyositis ... ANA #patterns #rheumatology ... #diagnosis #differential
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential Diagnosis ... inflammation Others: • Lupus ... such as systemic lupus ... purpura: strong sign ... #rheumatology #
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Butterfly rash, Vasculitis ... pain (20%) Renal disease ... erythematosus #signs ... #symptoms #diagnosis ... #rheumatology
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
Differential Diagnosis ... , dermatomyositis ... Non-autoimmune rheumatologic ... Erythematosus #Diagnosis ... #Rheumatology
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• Autoimmune diseases ... Labs/Diagnosis: ... Antineutrophil cytoplasmic antibody ... (e.g. systemic lupus ... classification #rheumatology
Paraproteinemias

Entities That Can Feature A Monoclonal Protein/M Component:
• MM
• WM
• MGUS
• MGCS
• MGRS
• Splenic Marginal Zone
• Heavy Chain disease ... Autoimmunity: • -MM/WM: Vasculitis ... to cold IgG • Lupus ... Sneddon-Wilkinson disease ... #Differential #Diagnosis