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{{Relapsing fever}}
{{Relapsing fever}}
{{CMG}}
{{CMG}} {{AE}} {{Maliha}} [[Roghayeh Marandi]]
 
==Overview==
[[Antimicrobial]] therapy for [[relapsing fever]] in adults depends on the [[vector]] ([[Tick-borne relapsing fever|Tick-borne]] vs. [[Louse-borne relapsing fever|Louse-borne]]) and includes either [[Doxycycline]], [[Erythromycin]], or [[Tetracyclines]]. Intravenous [[Ceftriaxone]] is added if either [[meningitis]] or [[encephalitis]] is present.


==Medical Therapy==
==Medical Therapy==
=== Pharmacotherapy ===
===Antimicrobial Medications===
Erythromycin, tetracyclines, chloramphenicol, or penicillins have all been shown to be effective for treating TBRF.  Although duration of therapy has not been well studied for TBRF, the current recommendation is seven days of antibiotic therapy.   In contrast, LBRF caused by B. recurrentis can be treated with a single dose of antibiotics.  
*[[Erythromycin]], [[Tetracyclines]], [[Chloramphenicol]], or [[Penicillins]] have all been shown to be effective for treating [[tick-borne relapsing fever]] [[Tick-borne relapsing fever|TBRF]].  Although the duration of therapy has not been well studied for TBRF, the current recommendation is seven days of [[antibiotic]] therapy. In contrast, [[louse-borne relapsing fever]]  caused by [[Borrelia recurrentis|B. recurrentis]] can be treated with a single dose of [[antibiotics]].  
 
*For young children and pregnant women either [[Erythromycin]] and/or [[Penicillin]] are recommended for the treatment of [[Tick-borne relapsing fever|TBRF]].
For young children and pregnant women either erythromycin and/or penicillin are recommended for treatment of TBRF.
 
When initiating antibiotic therapy, a patient should be watched closely for a [[Jarisch-Herxheimer]] reaction for the first 4 hours after the antibiotic is given (Negussie, Remick et al. 1992).  The reaction may be difficult to distinguish from a febrile crisis, with rigors and decreased blood pressure.  Cooling blankets and appropriate use of antipyrectic agents may be indicated.
The Jarisch-Herxheimer reaction produces apprehension, [[diaphoresis]], fever, [[tachycardia]], and [[tachypnea]] with an initial pressor response followed rapidly by [[hypotension]]. Recent studies have shown that [[tumor necrosis factor-alpha]] (TNF-alpha) may be partly responsible for the reaction.
 
==== Acute Pharmacotherapies ====
The CDC has not developed specific treatment guidelines for TBRF.  Below are the treatment recommendations as outlined in Harrisons Principles of Internal Medicine. 16th edition. 2004. p 994.
 
[[Image:Treatment.jpg|left|Treatment]]
<ref>http://www.cdc.gov/ncidod/dvbid/RelapsingFever/RF_Treatment.htm
</ref>
 
==Treatment==
===Antimicrobial regimen===
===Antimicrobial regimen===
===Tick-Borne Relapsing Fever===
:* Preferred regimen: [[Doxycycline]] 100 mg PO bid for 5-10 days<ref>{{cite book | last = Bartlett | first = John | title = Johns Hopkins ABX guide : diagnosis and treatment of infectious diseases | publisher = Jones and Bartlett Learning | location = Burlington, MA | year = 2012 | isbn = 978-1449625580 }}</ref>
:* Alternative regimen: [[Erythromycin]] 500 mg PO qid for 5-10 days
:* Note: If meningitis/encephalitis present, use [[Ceftriaxone]] 2 g IV q12h for 14 days


 
===Louse-Borne Relapsing Fever===
 
:* Preferred regimen: [[Tetracycline]] 500 mg PO single dose
 
:* Alternative regimen: [[Erythromycin]] 500 mg PO single dose
===Additional aspects of management===
When initiating antibiotic therapy, a patient should be watched closely for a [[Jarisch-Herxheimer]] reaction for the first 4 hours after the [[antibiotic]] is given. The reaction may be difficult to distinguish from a [[febrile]] crisis, with [[rigors]] and [[decreased blood pressure]]. Cooling blankets and appropriate use of [[Antipyretic|antipyretic agents]] may be indicated and may be lessened by giving [[acetaminophen]] 650 mg orally 2 hours before and 2 hours after the first dose of [[antibiotic]] therapy. This reaction tends to be more severe in patients with [[louse-borne relapsing fever]] treated with [[penicillin]].


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
[[Category;Needs overview]]
[[Category:Bacterial diseases]]
[[Category:Bacterial diseases]]
[[Category:Zoonoses]]
[[Category:Zoonoses]]
[[Category:Infectious diseases]]
[[Category:Infectious diseases]]
[[Category:Infectious Diseases Project]]
[[Category:Infectious Disease Project]]

Latest revision as of 16:39, 25 September 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Maliha Shakil, M.D. [2] Roghayeh Marandi

Overview

Antimicrobial therapy for relapsing fever in adults depends on the vector (Tick-borne vs. Louse-borne) and includes either Doxycycline, Erythromycin, or Tetracyclines. Intravenous Ceftriaxone is added if either meningitis or encephalitis is present.

Medical Therapy

Antimicrobial Medications

Antimicrobial regimen

Tick-Borne Relapsing Fever

  • Preferred regimen: Doxycycline 100 mg PO bid for 5-10 days[1]
  • Alternative regimen: Erythromycin 500 mg PO qid for 5-10 days
  • Note: If meningitis/encephalitis present, use Ceftriaxone 2 g IV q12h for 14 days

Louse-Borne Relapsing Fever

Additional aspects of management

When initiating antibiotic therapy, a patient should be watched closely for a Jarisch-Herxheimer reaction for the first 4 hours after the antibiotic is given. The reaction may be difficult to distinguish from a febrile crisis, with rigors and decreased blood pressure. Cooling blankets and appropriate use of antipyretic agents may be indicated and may be lessened by giving acetaminophen 650 mg orally 2 hours before and 2 hours after the first dose of antibiotic therapy. This reaction tends to be more severe in patients with louse-borne relapsing fever treated with penicillin.

References

  1. Bartlett, John (2012). Johns Hopkins ABX guide : diagnosis and treatment of infectious diseases. Burlington, MA: Jones and Bartlett Learning. ISBN 978-1449625580.