20 results
Autoantibodies in Rheumatology
 • Lupus (SLE): ANA (anti-nuclear antibody), dsDNA (double-stranded DNA), Anti-Smith, Anti-Ro (SSA) and
Rheumatology • ... Lupus (SLE): ANA ... #Rheumatology # ... diagnosis #associations ... #table
Systemic Lupus Erythematosus - Diagnosis
Manifestations:
 - Arthritis 69%
 - Malar rash 40%
 - Fever 36%
 -
: - Arthritis ... Auto-Antibodies: - ANA ... and Lupus Mimickers ... #autoantibodies ... #differential #rheumatology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
Constitutional symptoms, Arthritis ... of autoantibodies ... sle #comparison #table ... #rheumatology # ... diagnosis #management
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
Autoantibodies and ... Disease Associations ANA ... syndrome Anti-Scl ... Associations #diseases #diagnosis ... #table #rheumatology
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... joint • Systemic lupus ... RF test should ... #laboratory #workup ... #Rheumatology
Antinuclear antibodies and Systemic lupus
Anti-dsDNA	60-80%	Association with disease activity (when with Farr assay) and lupus nephritis. Can
clinically suspected, tests ... #Antinuclear #autoantibodies ... erythematosus #diagnosis ... #rheumatology # ... table #ANA
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
• Anti-Ro/SSA autoantibodies ... Differential Diagnosis ... Non-autoimmune rheumatologic ... Malignancy (e.g. hematologic ... #Rheumatology
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
should be interpreted ... Juvenile Idiopathic Arthritis ... Juvenile Idiopathic Arthritis ... #patterns #rheumatology ... #diagnosis #differential
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
present both at rest ... improves quickly with rest ... Joint #Pain #MSK #rheumatology ... #approach #workup ... #differential #diagnosis
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
SJIA], systemic lupus ... Liver function tests ... Activation #Syndrome #Diagnosis ... #Management #Hematology ... #Rheumatology