20 results
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
Pain - Diagnostic ... spondyloarthropathies, lupus ... reactive arthritis, gout ... #Joint #Pain #MSK ... approach #workup #differential
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
- Differential Diagnosis ... Crystalline - Gout ... “Bamboo Spine” Fusion ... with Systemic Lupus ... Disorders #msk #Differential
Inflammatory Joint Pain - Differential Diagnosis Algorithm 
Monoarticular
 • Gout (Podagra, Tophi)
 • Pseudogout
 • Early
Pain - Differential ... Monoarticular • Gout ... ) • Gout • Psoriatic ... Arthritis • Systemic Lupus ... JointPain #MSK #Differential
Arthrocentesis - Joint Fluid Analysis

Effusion Characteristics (Color, Clarity, WCC, PMN, Crystals, Bacteria) by Disease Process: 
OA,
Arthrocentesis - Joint ... Fluid Analysis Effusion ... birefringent crystals), Gout ... #Diagnosis #Differential ... Arthrocentesis #Joint
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
- Differential ... Fever/Chills/Joint ... pain/Night sweats ... : - Gout - Pseudo ... gout - Osteoarthritis
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Differential Diagnosis ... suggested by warmth, effusion ... Crystal induced (Gout ... fever • Lyme • Gout ... #pain #Differential
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Rheumatica • Pain ... Anti-retrovirals, Gemcitabine Lupus ... Diffuse muscle pain ... uncommon 5-15% of lupus ... Myopathies #myopathy #differential
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Associated with Joint ... Pain Rash ... lesions • Discoid lupus ... #dermatology #joint ... #differential #
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Features of Systemic Lupus ... 50%): Pleurisy / effusion ... phenomenon (20%) Joints ... Arthritis in small joints ... lesions Abdominal pain
Top 10 situations when to think about lupus
1) Inflammatory joint pain (especially in the wrists and
) Inflammatory joint ... pain (especially ... and fingers, or pain ... the face (many differential ... has been ruled out