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Faget Sign - Pulse-Temperature Dissociation
Causes of Relative Bradycardia
 • Infectious Causes: Legionella, Psittacosis, Q fever, Typhoid
Faget Sign - Pulse-Temperature ... Babesiosis, Malaria, Leptospirosis ... Yellow fever, Dengue ... #Sign #Pulse #Temperature ... #differential #diagnosis
Faget's Sign & Liebermeister's Rule
Pulse-Temperature Dissociation
EVERY 1 F RISE IN TEMPERATURE -> HR INCREASES 8-10 BPM
INFECTIOUS
Faget's Sign & Liebermeister's ... • Malaria • Leptospirosis ... Dengue Fever NOTE ... #Fagets #Sign #Pulse ... #Dissociation #diagnosis
Biphasic Illness of Leptospirosis
Some patients do not progress to severe disease. Others, rapidly develop severe disease
Biphasic Illness ... maculopapular rash ... • Others: nausea ... Biphasic #Phases #Diagnosis ... #Illness #Signs
Modified dengue severity classification, PAHO/WHO
Dengue without warning signs - DNWS:
 • Person who lives or has
without warning signs ... who lives or has traveled ... acute febrile illness ... signs - DWWS: ... the following signs
Heat Illnesses and Heat Stroke - Differential Diagnosis Framework

Heat Cramps:
 • Muscle pain or spasm -
- Differential Diagnosis ... fatigue Heat Rash ... → Syncope • Signs ... - Decreased pulse ... #causes #stroke
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
- Differential Diagnosis ... Non-Infectious Causes ... fever • Leptospirosis ... Brucellosis Faget's Sign ... - Temperature Pulse
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
, chikungunya, dengue ... Maculopapular rash ... Acute meningeal signs ... second phase of the illness ... • Uveitis • Rash