Epidemiology

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Transmission/Microbiology

Tick-Borne Relapsing Fever (see Tick-Borne Illnesses, [[Tick-Borne Illnesses]])

• Tick Vectors
  • Argasid/Soft-Bodied Ticks: usually Ornithodoros
• Organisms
  • Borrelia Hermsii: in Mountainous Western US
  • Borrelia Turicatae: in Southwest and South Central US
  • Other Borrelia Species

Louse-Borne Relapsing Fever

• Louse Vector
  • Pediculosis Humanis Corporis (Body Louse)
• Organisms
  • Borrelia Recurrentis

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Physiology

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Diagnosis

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Clinical Manifestations of Tick-Borne Relapsing Fever

Hematologic Manifestations

• Splenomegaly (see Splenomegaly, [[Splenomegaly]])

Neurologic Manifestations

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Other Manifestations

• Fever (see Fever, [[Fever]])

Clinical Manifestations of Louse-Borne Relapsing Fever

Hematologic Manifestations

• Coagulopathy (see Coagulopathy, [[Coagulopathy]])
  • Physiology
    • Impaired Hepatic Production of Clotting Factors
    • Obstruction of Small Vessels by Aggregates of Spirochetes, Red Blood Cell, and Platelets
    • Thrombocytopenia
  • Clinical
    • Ecchymosis (see Ecchymosis, [[Ecchymosis]])
    • Epistaxis (see Epistaxis, [[Epistaxis]])
    • Petechiae (see Petechiae, [[Petechiae]])
• Splenomegaly (see Splenomegaly, [[Splenomegaly]])

Other Manifestations

• Fever (see Fever, [[Fever]])

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Treatment

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References

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