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  1. Like Lyme disease, Rocky Mountain Spotted Fever (RMSF) is a vector-borne illness transmitted via a Rocky Mountain wood tick or brown dog tick carrying infectious bacteria. [6] This infectious disease is significantly less common than Lyme disease—while the number of confirmed cases rises each year, only around 5,000 infections were reported ...

  2. Apr 28, 2024 · Symptoms. Rocky Mountain Spotted Fever (RMSF) and Lyme Disease share some common symptoms, but also have distinct differences in their presentation. RMSF typically begins with a sudden onset of symptoms, usually within 2-14 days after a tick bite. The initial symptoms include fever, headache, muscle aches, and fatigue.

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  4. Aug 25, 2022 · Symptoms of Rocky Mountain spotted fever start two days to two weeks after an infected tick bites you. Symptoms usually develop over a few days, starting with fever, headache, nausea, vomiting and muscle pains. Rash develops within three days in about 50% of people. Don’t wait for rash to appear to seek treatment.

  5. Jul 3, 2023 · Lyme disease is caused by the bacteria borrelia burgdorferi. Rocky Mountain Spotted Fever comes from a bacteria group known as ricksettia; RMSF is caused by Ricksettia ricksettsii ( r. ricksettsii ). Which illness you develop depends on the type of tick that bit you and the types of pathogens it was carrying. (If you save the tick, you can send ...

  6. Aug 16, 2022 · Although they’re both spread through tick bites, Rocky Mountain Spotted Fever and Lyme disease are different infections. The biggest difference is the kind of bacteria that causes the infections. Lyme disease is caused by species from the bacteria group borrelia burgdorferi, while RMSF is caused by a bacteria known as rickettsia.

  7. Mar 25, 2024 · When to Go to the ER. Rocky Mountain spotted fever (RMSF) is a bacterial illness caused by a bite from an infected tick. Symptoms include high fever and widespread rash. In the United States, there are 4,000–6,000 reports of tick-borne spotted fevers, including RMSF, each year. It's the deadliest tick-borne illness in the world.

  8. May 7, 2019 · One of the deadliest tickborne diseases in the Americas. Rocky Mountain spotted fever (RMSF) is a bacterial disease spread through the bite of an infected tick. Most people who get sick with RMSF will have a fever, headache, and rash. RMSF can be deadly if not treated early with the right antibiotic.