What are characteristics of rash in early stages of Rocky Mountain spotted fever (RMSF)?

Updated: Mar 23, 2021
  • Author: Sunny Patel, DO; Chief Editor: Michael Stuart Bronze, MD  more...
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In the early phases, the rash may be blanching, nonpruritic, and macular. In 45-49% of patients, it eventually becomes petechial; in rare cases, purpura and skin necrosis or gangrene develop. In dark-skinned patients, the rash is difficult to see.

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