Monday, July 23, 2012

Skin I

Two skin lesions this week. Here's the first:


A farmer who works with sheep and goats presents with the lesion above. He notes fever, and exam shows regional lymphadenopathy. The lesion began as a red, solid, elevated papule then enlarged to the current state. Soon, it will form a red weeping surface, then develop a thin, dry crust with black dots covering the surface. After that, small papillomas will form. Finally, a thick crust grows over the lesion, the papillomas decrease in size, and the lesion flattens out.

Challenge: What's the cause of this disease?

Image shown under Fair Use.

6 comments:

Anonymous said...

orf

webhill said...

Orf! We saw similar slides in our small ruminant medicine class.... :)

Jimmy said...

Orf disease...

albert said...

orf virus infection

Craig Chen said...

...i can't even begin to imagine how 4 people got orf....nice job :)
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Skin I

This is orf or milker’s nodule, a zoonosis from sheep, goats, and musk oxen, caused by a parapoxvirus.

Source: acponline.org.

webhill said...

@craig can't speak for the others but orf is no zebra for us veterinarians.