11 results
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Toxic Damage (e.g ... Displacement (e.g ... Non-lmmune: • HELLP Syndrome ... HUS • DIC • Vasculitis ... Foreign Surface (e.g
Venous Thrombosis vs Arterial Thrombosis - Differential Diagnosis Framework

VENOUS THROMBOSIS

 • Acquired Risk Factors:
	- >48 hours
Hematological: - HIT ... • Nephrotic Syndrome ... in young patients ... 19 - PNH - Vasculitis ... #pathophysiology
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• They can cause ... Cryoglobulins Cause ... HBV infection, HIV ... tissue disorder (e.g ... classification #rheumatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... - Coronary arteries ... Thrombosis and arterial ... purpura: strong sign ... differential #diagnosis #rheumatology
Leukostasis vs Tumor Lysis Syndrome
Leukostasis:
 • Pathophysiology: Large, immature blasts and high WBC count cause hyperviscosity
Leukostasis: • Pathophysiology ... high WBC count cause ... WBC >100k, + lab signs ... : • Pathophysiology ... unless worrisome EKG
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
• Acute stroke syndromes ... Lack of UMN/LMN signs ... parainfluenza, Coxsackie, HIV ... , CMV, EBV - Bacterial ... electromyographic (EMG
Extra-articular and Other Conditions Associated with Joint Pain

Eyes
  • Iritis or uveitis - Spondyloarthropathies, Sarcoidosis,
Lyme disease, Vasculitis ... (e.g., PAN) ... Heberden's nodes (DIP ... Bouchard's nodes (PIP ... differential #diagnosis #rheumatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
purpura: Strong sign ... of shoulder and hip ... • Coronary arteries ... tract, and often causes ... Differential #Diagnosis #Rheumatology
Cryofibrinogenemia Summary

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

Cryofibrinogenemia:
 • The precipitation of a
cryoglobulin (CG ... malignancies, vasculitis ... cryoglobulins • Negative causes ... • TTP, HUS and HIT ... Antiphospholipid syndrome
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
Libman Sacks) • Atrial ... valvular disease • Vasculitis ... Cholesterol emboli syndrome ... ↑ ESR, CRP • EKG ... Differential #Diagnosis #cardiology