17 results
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
- Differential Diagnosis ... Osteoarthritis - Overuse syndrome ... Seronegative Reactive Syndrome ... #differential #diagnosis ... #msk #physicalexam
Meralgia paresthetica: Pathogenesis and Clinical Findings
Compression/injury of Lateral Femoral Cutaneous Nerve (LFCN) -> Meralgia paresthetica
 •
sensory • Before diagnosis ... intervertebral disc disease ... Stabbing) - Negative ... Straight Leg Raise Test ... MeralgiaParesthetica #MSK
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
meningitis), MCC CNS symptoms ... Positive pathergy test ... is a skin prick test ... #signs #symptoms ... #rheumatology #
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
Cold Agglutinin Syndrome ... for anti-C3d and negative ... Test: Donath-Landsteiner ... test #cold # ... hemolytic #anemia #hematology
Cryofibrinogenemia Summary

Cryofibrinogenemia Epidemiology:
 • 40-70 years with a modest female predominance

Cryofibrinogenemia:
 • The precipitation of a
Cryofibrinogenemia Symptoms ... levels >1g/L • Negative ... cryoglobulins • Negative ... Antiphospholipid syndrome ... #rheumatology #
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
or nerve root Symptoms ... of Joint Disease ... #Joint #Pain #MSK ... #rheumatology # ... #differential #diagnosis
Antinuclear antibodies and Systemic lupus
Anti-dsDNA	60-80%	Association with disease activity (when with Farr assay) and lupus nephritis. Can
clinically suspected, tests ... SLE-SSc-AlM overlap syndromes ... Negative association ... erythematosus #diagnosis ... #rheumatology #
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Arthritis Differential Diagnosis ... constitutional symptoms ... aureus • Gram-negative ... #Differential #Diagnosis ... #MSK #rheumatology
SAPHO Syndrome Summary

What?
SAPHO syndrome is a rare chronic inflammatory disorder of bone, joint, and skin characterized
affected areas and if negative ... blockers had the best ... osteoarticular and skin disease ... #Rheumatology # ... diagnosis #management
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential Diagnosis ... • Cogan Syndrome ... Presentation - Systemic Symptoms ... retinopathy Lab Tests ... #rheumatology #