3931 results
Eosinophils (Eos) and hypereosinophilia (HE)
Caused by eosinophilopoietic cytokines
Common causes:
 - Drug reaction
 - Helminth infection
 -
hypereosinophilia (HE) Caused ... cytokines Common causes ... Rare causes: ... EGPA, rheumatoid arthritis ... Differential #Diagnosis #Causes
Causes of Fever of Unknown Origin (FUO) - Differential Diagnosis
 • Infection: Extrapulmonary tuberculosis, Abscess, Endocarditis,
Causes of Fever ... Lupus, Rheumatoid arthritis ... vasculitis to cause ... , Kikuchi disease ... Differential #Diagnosis #causes
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
Interstitial Lung Diseases ... ILD caused by inhalation ... Connective Tissue Disease ... sclerosis, Rheumatoid arthritis ... differential #pulmonary #causes
Causes of Diffuse Lung Disease. 
Collagen vascular 
 - Scleroderma 
 - Rheumatoid arthritis 
 -
Causes of Diffuse ... Lung Disease. ... - Rheumatoid arthritis ... #Differential #Causes ... Diffuse #Lung #Disease
Causes of Severe Aortic Regurgitation - Differential Diagnosis
Acute:
 • Leaflet: Traumatic Rupture, Acute Infective Endocarditis, Acute
Causes of Severe ... Lupus, Rheumatoid Arthritis ... Polychondritis, Reactive Arthritis ... , Psoriatic Arthritis ... Differential #Diagnosis #Causes
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
) • Rheumatic Diseases ... : IgG4-Related Disease ... RD), Rheumatoid Arthritis ... (SPA) • Other Causes ... Mycobacterial Causes
Inflammatory Joint Pain - Differential Diagnosis Algorithm 
Monoarticular
 • Gout (Podagra, Tophi)
 • Pseudogout
 • Early
Early Rheumatic Disease ... • Rheumatoid Arthritis ... Asymmetric (Psoriatic Arthritis ... • Psoriatic Arthritis ... #Orthopedics #Causes
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Causes of Knee Effusions ... - Systemic disease ... Effusions - Septic Arthritis ... SLE - Behcet Disease ... Knee #Effusions #causes
Monoarthritis - Differential Diagnosis
Infection (Acute):
 - S. aureus (most common)
 - S. pneumonia
 - Salmonella (in
species - Lyme disease ... Early Rheumatoid arthritis ... IBD, reactive arthritis ... , psoriatic arthritis ... Differential #Diagnosis #Causes
Back Pain - Differential Diagnosis
Primary Back Pathology:
 • Musculoligamentous injury (a.k.a. lumbosacral strain)
 • Spondylosis (i.e.
. degenerative arthritis ... to metastatic disease ... Systemic Diseases ... , reactive arthritis ... Differential #Diagnosis #causes