Relapsing fever

Differential Diagnosis

• Infectious
  • Bacterial
    • Q fever
    • Brucellosis
    • Tick- and louse-borne relapsing fever: 3 days on, 7 days off; travel to endemic area and exposure to tick or louse vector
    • Rat-bite fever
    • Bartonellosis
    • Chronic meningococcemia
    • Ascending cholangitis
  • Viral
    • Colorado tick fever
    • Yellow fever
    • Dengue
    • Viral hemorrhagic fever
    • Lymphocytic choriomeningitis
    • Echovirus 9
  • Parasitic
    • Malaria
• Non-infectious periodic fever syndromes
  • Familial Mediterranean fever syndrome (FMF)
  • TNF-receptor-associated periodic syndrome (TRAPS)
    • Aka. Hibernian fever
    • Irish/Scottish
    • Fevers, rash, abdominal pain, arthralgia, myalgia, puffy eyes