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  2. www.cdc.gov › rmsf › healthcare-providersClinical and Laboratory Diagnosis | Rocky Mountain Spotted ...

    Mar 26, 2021 · Clinical Diagnosis. Early recognition and treatment with doxycycline is critical to survival. Rocky Mountain spotted fever (RMSF) can be difficult to diagnose due to the non-specific signs and symptoms in early stages of illness. Signs and symptoms can vary from patient to patient and can resemble other, more common diseases.

  3. www.ncbi.nlm.nih.gov › books › NBK430881Rocky Mountain Spotted Fever (Rickettsia rickettsii ...

    Jul 17, 2023 · Rocky Mountain spotted fever (RMSF) is an acute febrile tick-borne illness caused by Rickettsia rickettsii. In North America, it is both the most severe and the most common rickettsial infection. Without prompt antibiotic treatment, mortality rates are as high as 20 to 30 percent.

    • Jessica Snowden, Kari A. Simonsen
    • 2023/07/17

  4. my.clevelandclinic.org › health › diseasesRocky Mountain Spotted Fever: Causes, Symptoms & Treatment

    Aug 25, 2022 · Rocky Mountain spotted fever (RMSF) is a serious illness you get from a tick bite. It’s caused by the bacterium Rickettsia rickettsii. Symptoms include a high fever and headache. Rash may start three or more days after other symptoms. RMSF can be life-threatening if not treated quickly with antibiotics. RMSF is found in most states in the U.S.

  5. www.labcorp.com › tests › 016502016502: Spotted Fever Group Antibodies, IgG and IgM | Labcorp

    IgM titer of ≥1:64 is regarded as probable evidence of recent or ongoing infection. A four-fold or greater increase in titer between two serum samples drawn 1-2 weeks apart and tested in parallel is the best serologic indicator of a recent rickettsial infection.

  6. www.healthline.com › rocky-mountain-spotted-feverRocky Mountain Spotted Fever: Pictures and Long-Term Effects

    Rocky Mountain spotted fever (RMSF) is a bacterial infection spread by a bite from an infected tick. It causes vomiting, a sudden high fever around 102 or 103°F, headache, abdominal pain,...

  7. www.merckmanuals.com › professional › infectiousRocky Mountain Spotted Fever (RMSF) - Infectious Diseases ...

    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.)