44 results
Fever in Returning Travelers from Tropical Regions - Frequent Differential Diagnoses
Medical History:
 • Skin exposure to
Travelers from ... , leptospirosis ... Cough, dyspnea - Pneumonia ... #Returning #Traveler ... diagnosis #tropical #travel
Travel History - Clues to Infectious Disease Diagnosis in a Traveler 
 • Where did you
Clues to Infectious ... → Leptospirosis ... Rabies, cat scratch fever ... Herpesvirus B infection ... InfectiousDiseases #Infections
Faget Sign - Pulse-Temperature Dissociation
Causes of Relative Bradycardia
 • Infectious Causes: Legionella, Psittacosis, Q fever, Typhoid
Dissociation Causes ... Bradycardia • Infectious ... Causes: Legionella ... Babesiosis, Malaria, Leptospirosis ... • Non-Infectious
Fever in the Returning Traveler - History
Exposure History:
 • Street foods / Local water: entenc fever,
Traveler - History ... , travellers' diarrhea ... tattoos, piercings, injections ... schistosomiasis, leptospirosis ... #Returning #Traveler
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Causes of Relative ... Infectious: Legionella ... Babesiosis, Malaria, Leptospirosis ... , Non-infectious ... #bradycardia #Causes
Faget's Sign & Liebermeister's Rule
Pulse-Temperature Dissociation
EVERY 1 F RISE IN TEMPERATURE -> HR INCREASES 8-10 BPM
INFECTIOUS
INCREASES 8-10 BPM INFECTIOUS ... • Malaria • Leptospirosis ... OTHER CAUSES ... the most likely infection ... #differential #causes
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
104°F) • Lobar pneumonia ... gram-negative pneumonia ... Causes: • Still's ... • Leptospirosis ... • Malaria • Leptospirosis
Non-Resolving Pneumonias: Etiologies
Unusual Infections:
 - Immunocompromised patients (e.g.: Mycobacterium, Aspergillosis, Nocardia)
 - Endemic Fungi (e.g.: Histoplasmosis,
Non-Resolving Pneumonias ... Etiologies Unusual Infections ... psittaci/avian, leptospirosis ... yersinia/rats, Q fever ... ) - Returning travelers
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... Legionella: • Nausea ... factor • May cause ... reported in 100% of cases ... Microsporidium #Lung #Infections
Interstitial pneumonias
An acute reticular pattern is most frequently caused by interstitial edema due to cardiac heart
Interstitial pneumonias ... most frequently caused ... The other cause ... cough and some fever ... This was a PCP-infection