Tick chunk results in Rocky Mountain noticed fever

Tick chunk results in Rocky Mountain noticed fever

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Rocky Mountain noticed fever (RMSF) is a probably deadly illness that may be transmitted via the chunk of an contaminated tick. The illness, which might impression numerous organ programs within the physique, sometimes presents with obscure signs akin to fever, headache, rash, muscle ache, and nausea.


Rocky Mountain noticed fever has primarily been reported in 5 states in the USA, in line with the CDC. These embody Missouri, Tennessee, Oklahoma, Arkansas, and North Carolina. Nonetheless, RMSF has been documented in different states, as nicely.

The illness will be transmitted by numerous ticks relying upon the area. Within the japanese U.S., it’s transmitted by the American canine tick; within the Rocky Mountains, by the Rocky Mountain wooden tick and in elements of southwestern U.S., it’s transmitted by the brown canine tick.

Of their article, “Unconventional Rocky Mountain Spotted Fever Presentation From Kentucky: A Compelling Case Report and Literature Review,” Hussain and colleagues describe the case of a 71-year-old man who developed fever, generalized weak point with myalgia and protracted hiccups over a 2-day interval.¹ His conditioned progressed and when admitted to the hospital, he displayed growing confusion and agitation.

“The choice to provoke therapy hinges on medical suspicion and failure to promptly administer acceptable remedy through the first 5 days of sickness is related to elevated mortality charges.”

The affected person’s situation improved after he was handled for sepsis, which included IV ceftriaxone. Nonetheless, he subsequently developed a fever of 106.5 F and was transferred to the intensive care unit.

After additional discussions, the affected person revealed he had been uncovered to ticks and a cat suspected of getting lice, one week previous to his symptom onset.

He was examined for Bartonella, Borrelia burgdorferi (Lyme disease) and Rickettsia.

“Preliminary assessments and coverings didn’t reveal a trigger, however later, after doable tick and lice publicity, he examined optimistic for Rickettsia and was prescribed prophylactic doxycycline,” the authors wrote.

“Empiric therapy with doxycycline was initiated, which performed a pivotal position in stopping potential problems,” the authors level out.

Authors Takeaways:

  • “Diagnostic outcomes are sometimes unavailable inside the first 5 days, emphasizing the pivotal position of medical judgment in immediate intervention.”
  • Healthcare suppliers ought to contemplate RMSF even within the absence of tick publicity, fever, or rash.
  • “Though fever has historically been a diagnostic hallmark, its absence mustn’t preclude medical consideration, particularly in endemic areas when sufferers in any other case exhibit suitable signs.”
  • As a result of the affected person initially offered with a fever which then resolved, clinicians redirected their consideration away from the preliminary suspicion of a rickettsia an infection.
  • Sufferers can have atypical shows of RMSF, akin to generalized neurologic complaints, myocarditis, or visible disturbances.
  • The analysis was notably difficult given the affected person had neurologic manifestations involving confusion and agitation.


  1. Hussain A, Grey C, Marlowe S, et al. (November 09, 2023) Unconventional Rocky Mountain Noticed Fever Presentation From Kentucky: A Compelling Case Report and Literature Overview. Cureus 15(11): e48558. doi:10.7759/cureus.48558

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