THE MERCK MANUAL: The Merck Manual of Diagnosis and Therapymultimedia


  • Zoonotic Diseases
  • Milker's Nodule

    photo size: small | high

    Milker's Nodule

    Milker's nodule is a focal skin lesion caused by paravaccinia virus, a parapoxvirus that causes udder lesions in cows. The lesion passes through 6 stages; this image shows the stage in which a single red edematous papule develops from an initial macule.

    Image courtesy of the National Institute for Occupational Safety and Health's Occupational Dermatoses web site (www.cdc. gov/niosh/ocderm.html).