By Gary M. White, MD
A milker's nodule (MN) is an infection of the skin caused by the paravaccinia virus, a DNA virus of the genus parapoxvirus and poxvirus family.
The patient develops an inflammatory nodule on the hands or forearms 5-15 days after being in contact with the udder or nose of a cow or a fomite/contaminated object. Most cases are asymptomatic, without systemic symptoms, but fever, lymphadenopathy and erythema multiforme may accompany.
No treatment is necessary. The lesion(s) will remit spontaneously. The patient is conferred immunity.
An. Bras. Dermatol. vol.90 no.3 Rio de Janeiro May/June 2015 Epub June 2015
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