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Rocky Mountain Spotted Fever

Reviewed 06/2020
 


BASICS

Rocky Mountain spotted fever (RMSF) is one of the spotted fever rickettsioses (SFR) and is the most common of the rickettsial infections in North America. It is associated with the highest rate...

DIAGNOSIS

  • It is important to have high incidence of suspicion for rickettsial infections when patients present with “influenzalike” symptoms during summer months regardless of a known history of tick ...

TREATMENT

MEDICATION

First Line

Doxycycline is the treatment of choice in both adults and children (1)[A],(2)[C],(3)[C]. 
  • Untreated rickettsial infections have a high rate of morbidity and mortality(20–3...

ONGOING CARE

FOLLOW-UP RECOMMENDATIONS

  • Patients with mild disease may be treated as outpatients if close follow-up is available.

  • Hospitalize patients with moderate to severe disease.

  • Infection does not c...

REFERENCES

1
Biggs HM, Behravesh CB, Bradley KK, et al. Diagnosis and management of tickborne rickettsial diseases: Rocky Mountain spotted fever and other spotted fever group rickettsioses, ehrlichiose...

CODES

ICD10

A77.0 Spotted fever due to Rickettsia rickettsii 

ICD9

082.0 Spotted fevers 

SNOMED

  • 186772009 Rocky Mountain spotted fever (disorder)

  • 240616003 Eastern Rocky Mountain spotted fever

  • 240615004 West...

CLINICAL PEARLS

  • Diagnosis of RMSF requires a high index of clinical suspicion.

  • Tick bites are often unnoticed, and some patients may never develop a rash.

  • Begin treatment immediately in suspected cases....

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