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Common skin conditions
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Work contributed to the skin disorders discussed in this quiz.
For each of the twelve cases, study the image(s) and then answer the questions. You can click on the image to view a larger version if required.
Each case should take approximately 2 minutes to complete. There is a list of suggested further reading material at the end of the quiz.
Make a diagnosis.
Orf affecting multiple sites.
What is the patient's likely occupation?
Sheep farmer.
Orf is a localised cutaneous infection due to inoculation with a parapox virus. Single or multiple red or purple blistered or crusted nodules most often arise on fingers or the nose of those that feed lambs. They persist for several weeks but resolve eventually spontaneously. A similar infection seen in calf handlers is called milker's nodules. Secondary erythema multiforme is quite common from both viruses.