2721 results
Seronegative Inflammatory Arthritis - Differential Diagnosis
 • Seronegative Rheumatoid Arthritis 
 • Infectious Arthritis: Viral, Bacterial,
Infectious ... Arthritis: Viral ... Systemic Rheumatic Disease ... Sclerosis, Sjogren's Disease ... Sarcoidosis, Still's Disease
Eosinophils (Eos) and hypereosinophilia (HE)
Caused by eosinophilopoietic cytokines
Common causes:
 - Drug reaction
 - Helminth infection
 -
reaction - Helminth infection ... reaction - Atopic disease ... aspergillosis - Viral infections ... EGPA, rheumatoid arthritis ... , IgG4-related disease
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
Infectious Joint ... Myalgia • Viral Arthritis ... Lesions) • Fifth Disease ... • Septic Arthritis ... tuberculosis • Lyme Disease
MIAMI Mnemonic for Differential Diagnosis of Lymphadenopathy
Malignancies
 - Kaposi sarcoma, leukemias, lymphomas, metastases, skin neoplasms
Infections
 -
skin neoplasms Infections ... chancroid, cutaneous infections ... immunodeficiency virus, infectious ... Dermatomyositis, rheumatoid arthritis ... syndrome, Still disease
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:
crystalline disease ... noncrystalline disease ... Infectious: Lyme ... disease Infectious ... Septic #Infective #Arthritis
Causes of Fever of Unknown Origin (FUO) - Differential Diagnosis
 • Infection: Extrapulmonary tuberculosis, Abscess, Endocarditis,
Diagnosis • Infection ... carcinoma • Non-infectious ... Inflammatory Diseases ... Lupus, Rheumatoid arthritis ... , Kikuchi disease
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
Symptoms of Joint Disease ... categories of joint disease ... Calcium oxalate Infectious ... Acute or chronic infections ... necrosis, and Paget disease
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
- DDX: - Infection ... - Systemic disease ... to the knee Infectious ... SLE - Behcet Disease ... Post-Infectious
Lymphadenopathy - Differential Diagnosis Algorithm
Localized: 
 • Cervical: EBV, CMV, HIV, Toxo, TB, Lymphoma, Head /
Melanoma • Axillary: Infection ... Thyroid / larynx disease ... Sexually transmitted infections ... Dermatomyositis, Rheumatoid Arthritis ... , Sjögren's • Infection
Differential Diagnosis of Acute Arthritis

Crystal-induced arthritis: Calcium oxalate, gout, cholesterol, pseudogout, hydroxyapatite crystals

Infectious arthritis: Bacteria, fungi,
hydroxyapatite crystals Infectious ... erythematosus,* Still disease ... inflammatory bowel disease–related ... tear Systemic infection ... immunodeficiency virus infection