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  2. Feb 19, 2019 · Doxycycline is the first-line treatment for adults and children of all ages: Adults: 100 mg every 12 hours. Children under 45 kg (100 lbs): 2.2 mg/kg body weight given twice a day. Patients with suspected RMSF should be treated with doxycycline for at least 3 days after the fever subsides and there is evidence of clinical improvement.

  3. Aug 25, 2022 · Doxycycline is the only antibiotic recommended to treat Rocky Mountain spotted fever. If you’re allergic to doxycycline, your healthcare provider may give you chloramphenicol as an alternative. Chloramphenicol can be hard to get in some countries and doesn’t work as well as doxycycline for RMSF.

  4. Jul 17, 2023 · Rocky Mountain spotted fever (RMSF) is an acute febrile tick-borne illness caused by Rickettsia rickettsii. It is the most severe and most common of the rickettsial infections in North America. [1] [2] [3] Go to: Etiology.

    • Jessica Snowden, Kari A. Simonsen
    • 2023/07/17
  5. Nov 29, 2023 · APPROACH. We recommend empiric therapy with doxycycline for patients with suspected RMSF, even if the symptoms are mild. Early therapy for RMSF is critical since a delay in treatment has been associated with an increased risk of mortality.

  6. Pathophysiology |. Symptoms and Signs |. Diagnosis |. Treatment |. Prevention |. Key Points |. More Information. Rocky Mountain spotted fever (RMSF) is caused by Rickettsia rickettsii and transmitted by ixodid ticks. Symptoms are high fever, severe headache, and rash. (See also Overview of Rickettsial and Related Infections.)

  7. Rocky Mountain spotted fever (RMSF) is an infection caused by the bite of an infected tick. It may occur anytime the weather is warm, but it most often occurs from April until September. It was first recognized in the Rocky Mountain states. But it may occur throughout the U.S.

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