A 35-year-old woman presents with a 4-day history of fever, chills, and severe headache. She reports a recent hiking trip in Tennessee. On day 4, you observe a petechial rash starting on her wrists and ankles spreading to her palms, soles, and trunk. She denies joint pain or a bullseye rash. Which of the following best describes the typical progression of the rash in Rocky Mountain Spotted Fever?
