What is a classic rash pattern in Rocky Mountain Spotted Fever?

What is a classic rash pattern in Rocky Mountain Spotted Fever?

• A. Petechial rash on palms and soles that migrates to wrists and ankles, then trunk
• B. Starts on trunk and spreads to limbs
• C. Vesicular rash on face
• D. No rash is typical

Answer: (A)

Rocky Mountain Spotted Fever typically shows a rash that starts on the extremities, often involving the palms and soles, and then spreads inward toward the trunk as the illness progresses. The rash can be petechial as vascular injury becomes more pronounced. This distal-to-proximal pattern with palm/sole involvement is the hallmark that makes the described description the best fit. The other patterns—rash beginning on the trunk, vesicular rash on the face, or no rash—are not characteristic of the classic RMSF presentation. If RMSF is suspected, treatment with doxycycline should begin promptly even before the rash appears, based on compatible clinical features and exposure history.

Rocky Mountain Spotted Fever typically shows a rash that starts on the extremities, often involving the palms and soles, and then spreads inward toward the trunk as the illness progresses. The rash can be petechial as vascular injury becomes more pronounced. This distal-to-proximal pattern with palm/sole involvement is the hallmark that makes the described description the best fit. The other patterns—rash beginning on the trunk, vesicular rash on the face, or no rash—are not characteristic of the classic RMSF presentation. If RMSF is suspected, treatment with doxycycline should begin promptly even before the rash appears, based on compatible clinical features and exposure history.