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Extra-articular and Other Conditions Associated with Joint Pain

Eyes
  • Iritis or uveitis - Spondyloarthropathies, Sarcoidosis,
Bacterial or viral infection ... • Interstitial lung ... • Shrinking lung ... Cardiomyopathies - Viral infection ... #differential #diagnosis
Causes of Diffuse Lung Disease. 
Collagen vascular 
 - Scleroderma 
 - Rheumatoid arthritis 
 -
Causes of Diffuse ... Lung Disease. ... - Rheumatoid arthritis ... Infectious - ... chemotherapy #Diagnosis
Ear Pain (Otalgia) - Differential Diagnosis Framework

Primary Otalgia 
 - Pain that originates from the ear
- Differential Diagnosis ... the following symptoms ... subdural hematoma, lung ... • Associated symptoms ... #differential #diagnosis
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
Infectious Joint ... - Differential Diagnosis ... Myalgia • Viral Arthritis ... #Differential #Diagnosis ... #Orthopedics #Causes
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
or nerve root Symptoms ... Calcium oxalate Infectious ... Acute or chronic infections ... #differential #diagnosis ... #arthritis
CAVITY – a useful mnemonic for the causes of a cavitating lung mass.

C = cancer
mnemonic for the causes ... - rheumatoid arthritis ... - pulmonary embolus ... I = infection ... bronchogenic cyst #Diagnosis
Lung Nodule - Differential Diagnosis Algorithm
Nodule on > 2 Years Without a Change in Size:
 •
Diagnosis Algorithm ... Breast, Testicle) Infection ... Tuberculosis • Septic Embolism ... • Rheumatoid Arthritis ... #Algorithm #Causes
Complications of Staph Aureus Bacteremia
 • CNS Infections
 • Septic pulmonary embolism (0.9% - 18.8%)
 •
Bacteremia • CNS Infections ... Septic pulmonary embolism ... 11.8%) • Septic arthritis ... - Native joint ... Complications #diagnosis
Synovial Fluid Analysis:

Findings (COLOR	TRANSPARENCY	VISCOSITY	WBC COUNT (PER MM3)	PMN CELL COUNT (%)	GRAM STAIN	CULTURE	PCR TEST	CRYSTALS)

By Condition (Normal 
Noninflammatory 
Inflammatory:
Lyme disease Infectious ... nongonococcal ) #Diagnosis ... Arthrocentesis #Joint ... Effusion #Analysis #Table ... Septic #Infective #Arthritis
Reversed Halo Sign - Infectious and Non-Infectious Differential Diagnosis
Definition: A focal rounded area of GGO surrounded
Differential Diagnosis ... Causes: Mucormycosis ... Causes: Granulomatosis ... Dermatomyositis, Lung ... pneumonia, Pulmonary embolism