Faget sign

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Background

A pulse-temperature dissociation (aka sphygmothermic dissociation) named after Louisiana physician Jean Charles Faget.

  • Typically for every 1 degree of fever the pulse increases by 10 beats/min. When fever is associated with bradycardia, it is referred to as Faget's sign.

Etiology

Common causes include:

  • Brucellosis
  • Chlamydia
  • Colorado tick fever virus
  • Coxiella burnetii
  • Dengue Fever
  • Drug fever
  • Legionella
  • Leptospirosis
  • Leishmaniasis
  • Mycoplasma
  • Psittacosis
  • Tularemia
  • Typhoid fever
  • Yellow Fever