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Feb 19, 2019 · A classic case of RMSF involves a rash that appears 2-4 days after the onset of fever as small, flat, pink, macules on the wrists, forearms, and ankles and spreads to include the trunk and sometimes the palms of hands and soles of feet.
Apr 26, 2022 · Rocky Mountain spotted fever gets its name from the rash that develops after being bitten by a tick infected by the Rickettsia rickettsii bacteria. The first symptoms are a fever and a...
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.
The characteristic red, spotted rash of Rocky Mountain spotted fever is usually not seen until the sixth day or later after onset of symptoms, but this type of rash occurs in only 35 to 60% of patients with Rocky Mountain spotted fever. The rash involves the palms or soles in as many as 80% of people.
RMSF is most often transmitted by the American dog tick in the Eastern, Central and Western United States; by the Rocky Mountain wood tick in the Rocky Mountain states; and by the brown dog tick in the Southwestern United States, along the U.S.-Mexico border. RMSF can be rapidly fatal if not treated within the first 5 days of symptoms.
Between the first and sixth day of fever, most patients with RMSF develop a rash on the wrists, ankles, palms, soles, and forearms that rapidly extends to the neck, face, axillae, buttocks, and trunk. Initially macular and pink, it becomes maculopapular and darker.
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 ...
