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  1. Rocky Mountain spotted fever (RMSF) is an illness you get from the bacteria Rickettsia rickettsii (R. rickettsii). It spreads through tick bites. Symptoms start out similar to many other illnesses, including headache, fever and rash. But if not treated right away, RMSF can be life-threatening.

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  3. Rocky Mountain spotted fever (RMSF), is the most severe rickettsiosis in the United States. RMSF is a rapidly progressive disease and without early administration of doxycycline can be fatal within days. Signs and symptoms may change as the illness progresses.

  4. Aug 28, 2018 · Facts and statistics. Prevention tips. What is Rocky Mountain spotted fever? Rocky Mountain spotted fever (RMSF) is a bacterial infection spread by a bite from an infected tick. It causes...

    • Jacquelyn Cafasso
  5. Apr 26, 2022 · Rocky Mountain spotted fever is a bacterial infection caused by a tick bite. Learn more about what causes it, what to expect, and how to treat it.

  6. Key points about Rocky Mountain spotted fever. RMSF is caused by a bacterium that is spread to people by the bite of an infected tick. Symptoms include a rash, fever, headache, decreased appetite, chills, sore throat, confusion, stomachache, nausea or vomiting, diarrhea, body aches, and sensitivity to light. Treatment includes antibiotics and ...

  7. The most common symptoms of Rocky Mountain spotted fever (RMSF) are a fever, headache, and rash. RMSF is spread through the bite of an infected tick. There is no vaccine to prevent RMSF. RMSF can be deadly if not treated early with doxycycline.

  8. Mar 25, 2024 · Rocky Mountain spotted fever (RMSF) is a serious disease you get from a tick bite, causing fever and central nervous system symptoms. Here's what to know.