26 results
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
decades of life Causes ... and clinical associations ... Cold #Urticaria #diagnosis ... #rheumatology # ... comparison #table
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
will correctly diagnose ... a case, or the ... that any given case ... it has a narrow focus ... #Calculation #Table
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
- Differential Diagnosis ... and Screening Testing ... of renal disease ... #Differential #Diagnosis ... #Workup #table
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
- Differential Diagnosis ... smear, HIV/HCV testing ... K), H. pylori test ... thyroid function test ... #hematology
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... (to support a diagnosis ... ANA and RF (if clinical ... laboratory #workup #diagnosis ... #testing #Rheumatology
Behcet's Syndrome - Diagnosis
Diagnostic Criteria for Behget's Syndrome (International Study Group for Behget's Disease):
 • Recurrent,
Diagnostic Criteria ... period AND • Meeting ... Abnormal pathergy test ... Most Common Clinical ... #rheumatology
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
Viral Infection Clinical ... Positive Coombs testing ... Test: Donath-Landsteiner ... test #cold # ... hemolytic #anemia #hematology
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
individual studies Clinical ... , describe clinical ... who test positive ... probability of getting ... #calculations #diagnosis
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
• Most common cause ... Lung Abscess - Clinical ... Putrid sputum/sour-tasting ... shows a small, stable ... #differential #causes
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
of liver disease ... Caused by intrapulmonary ... shunt (Type 2) Clinical ... Testing: • Pulse ... 10 minutes of rest