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Based on the images alone, it is usually not possible to determine the cause of the
determine the cause ... with cough and fever ... with low oxygen level ... Clinical #Diagnosis #Radiology ... Consolidation #Causes
Faget Sign - Pulse-Temperature Dissociation
Causes of Relative Bradycardia
 • Infectious Causes: Legionella, Psittacosis, Q fever, Typhoid
Psittacosis, Q fever ... , Typhoid fever, ... , Dengue fever, ... Mountain spotted fever ... , Drug fever
Faget's Sign & Liebermeister's Rule
Pulse-Temperature Dissociation
EVERY 1 F RISE IN TEMPERATURE -> HR INCREASES 8-10 BPM
INFECTIOUS
Psittacosis • Q Fever ... • Typhoid Fever ... • Drug Fever ... Typhoid Fever (S ... Dengue Fever NOTE
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Causes of Relative ... , Typhoid fever, ... , Dengue fever, ... , Drug fever ... #bradycardia #Causes
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
Fever Patterns - ... Continuous Fever ... (Step ladder: fever ... or no fever • ... Non-Infectious Causes
Childhood Immunization Schedule: Why we immunize
 • Diphtheria Toxin -> URT inflammation causes pseudomembrane with hardened
pharyngeal erythema, fever ... pharyngeal erythema, fever ... attack meninges -> Fever ... Sudden onset of fever ... pruritic rash, fever
Causes of Fever by System #Diagnosis #EM #IM #Fever #Differential #Ddxof
Causes of Fever ... Diagnosis #EM #IM #Fever
Fever in Returning Travelers from Tropical Regions - Frequent Differential Diagnoses
Medical History:
 • Skin exposure to
Fever in Returning ... Symptoms: • Fever ... , Dengue fever, ... typhoid, yellow fever ... , Lassa fever, acute
Causes of Fever of Unknown Origin (FUO) - Differential Diagnosis
 • Infection: Extrapulmonary tuberculosis, Abscess, Endocarditis,
Causes of Fever ... Brucellosis, Q fever ... Mediterranean fever ... , Factitious fever ... DrEricStrong #Fever
Differential Diagnosis of Fever and Splenomegaly
 - Typhoid
 - Infective endocarditis
 - Miliary tuberculosis
 - Hodgkin
Differential Diagnosis of Fever ... Brucellosis #Fever ... Differential #Diagnosis #causes