Which rash pattern is centrifugal?

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Prepare for the Emergency Preparedness Response Course (EPRC) – Clinician Course Test. Dive into multiple choice questions, utilize flashcards for better retention, and explore hints and explanations to enhance understanding. Ace your exam with comprehensive learning!

Multiple Choice

Which rash pattern is centrifugal?

Explanation:
Centrifugal spread means the rash tends to start on the face and extremities and then spread outward toward the trunk. In smallpox, this outward pattern is classic: you see many lesions on the face and limbs before the trunk becomes involved, and the lesions progress in unison across the body. This distinguishes it from a centripetal pattern, where the trunk is affected more than the face or limbs, which is typical of varicella (chickenpox). The other options don’t describe this outward, face-and-extremity–first distribution, so they don’t fit the characteristic pattern of smallpox.

Centrifugal spread means the rash tends to start on the face and extremities and then spread outward toward the trunk. In smallpox, this outward pattern is classic: you see many lesions on the face and limbs before the trunk becomes involved, and the lesions progress in unison across the body. This distinguishes it from a centripetal pattern, where the trunk is affected more than the face or limbs, which is typical of varicella (chickenpox). The other options don’t describe this outward, face-and-extremity–first distribution, so they don’t fit the characteristic pattern of smallpox.

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