10 results
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Arthritis Differential Diagnosis ... spine, shoulders, hips ... noninflammatory Signs ... aureus • Gram-negative ... #MSK #rheumatology
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
present both at rest ... e.g., congenital hip ... osteopetrosis, avascular ... #Pain #MSK #rheumatology ... #differential #diagnosis
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
Cold Agglutinin Syndrome ... for anti-C3d and negative ... Mycoplasma, EBV, HIV ... test #cold # ... hemolytic #anemia #hematology
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
- Differential Diagnosis ... Fever/Chills/Joint ... Effusions: - Hematologic ... #differential #diagnosis ... #msk #physicalexam
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
- Differential Diagnosis ... Disruptions in vascular ... Palpable Rash: - Autoimmune ... Fecal occult blood test ... #physicalexam
Cryofibrinogenemia Summary

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

Cryofibrinogenemia:
 • The precipitation of a
Hyperviscosity, - Vascular ... associated with autoimmune ... • TTP, HUS and HIT ... Antiphospholipid syndrome ... hematology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
purpura: Strong sign ... pulse deficits vascular ... of shoulder and hip ... eruption • Joints ... #Rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
eruption - Joints ... purpura: strong sign ... retinopathy Lab Tests ... Cryoglobulins • HIV ... #rheumatology #
Gout - Diagnosis and Management Summary

3 Conditions for Gout to Manifest:
1. Hyperuricemia
2. Monosodium urate deposition in
deposition in joints ... sex • Metabolic syndrome ... attacks • Other joints ... Needle-shaped, negatively ... double contour sign
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Tests: • Measure ... papules and Gottron sign ... ) • Shawl sign ... : Fever, joint pain ... weakness + atrophy- Hip