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Image Number 272 (Orf)

 
Morphology:
Nodule,purple

Diagnosis: Orf

Site: Arm,forearm

Sex: F

Age: 29

Type: Clinical

Description: Multiple purplish nodules on the forearm

Submitted by: Ian McColl

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Differential Diagnosis

History: Orf or contagious pustular dermatosis   is typically seen in farmer's wives,vets or shearers who handle infected sheep.It is caused by a parapox virus.The mouth area of the sheep is affected.Hence farmers wives who hand feed lambs get it on their fingers.Papules form into nodules which may ulcerate but slowly regress.This example was seen in a lady veterinarian who handled infected sheep.She also developed erythema multiforme,a rare complication.

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