skip to main content

Orf — SCE Dermatology MCQ

Instant feedback + full explanation. One question, done properly.

HardCutaneous InfectionOrfSCE Dermatology

A shepherd has a painless targetoid nodule on a finger ten days after assisting a lamb delivery. He is systemically well. The lesion is fluctuant-looking and is referred for incision. What is the best response?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: B — Avoid incision and use supportive care because uncomplicated orf resolves spontaneously

Explanation lettering: B = shown as A · C = shown as B · A = shown as C · E = shown as D · D = shown as E

C is correct. The occupational exposure and evolving targetoid finger lesion are typical of orf, a parapoxvirus infection. In an immunocompetent, well patient it is self-limiting and supportive care is usual. Incision is unnecessary and may delay healing or cause secondary infection. Severe, giant or persistent lesions in immunosuppression merit specialist input.

Reference: DermNet: orf: https://dermnetnz.org/topics/orf