12 results
Inflammatory Joint Pain - Differential Diagnosis Algorithm 
Monoarticular
 • Gout (Podagra, Tophi)
 • Pseudogout
 • Early
Pain - Differential ... • Systemic Lupus ... Erythematosus ... Rheumatic Fever Acute ... #JointPain #MSK
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
psoriasis (7-30%) • Inflammatory ... with Systemic Lupus ... Erythematosus ( ... SLE), should have ... monoarthritis #monoarticular
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
SLE • Psoriatic ... Symmetrical: • RA • SLE ... #Diagnosis #MSK ... #rheumatology # ... Monoarticular #Monoarthritis
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
SLE (Systemic Lupus ... photosensitivity, inflammatory ... Classification: • Acute ... Pleural effusions • Acute ... : • Joint pain
Differential Diagnosis of Acute Arthritis

Crystal-induced arthritis: Calcium oxalate, gout, cholesterol, pseudogout, hydroxyapatite crystals

Infectious arthritis: Bacteria, fungi,
Differential Diagnosis of Acute ... sarcoid, systemic lupus ... erythematosus,* ... immunodeficiency virus ... #Arthritis #Monoarticular
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
assay (IFA) is the main ... erythematosus ( ... erythematosus ( ... Drug-Induced, Inflammatory ... ANA #patterns #rheumatology
Approach to Joint Pain - Diagnostic Framework

1) Chronicity
2) Inflammatory vs Non-Inflammatory
3) Number of Joints Involved

1) Chronicity:
spondyloarthropathies, lupus ... Joints Involved: Monoarticular ... Chronic = RA, SLE ... #Joint #Pain #MSK ... #rheumatology #
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
erythematosus ... • Fever is the main ... erythematosus [ ... SLE], AOSD) • Infection ... #Rheumatology
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Fever/Chills/Joint pain ... - Inflammatory ... - SLE - Behcet ... Reactive Syndrome - Acute ... differential #diagnosis #msk
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... joint • Systemic lupus ... erythematosus ( ... Screening Tests for Acute ... , and low back pain