Ulcerative Mammillitis

  • Ulcerative mammillitis is a relatively uncommon condition but it can spread rapidly in herds which are affected for the first time and cause significant pain and discomfort.
  • It tends to occur most commonly in first lactation cows.
  • It is also caused by a virus.
  • Lesions of mamillitis can spread over the entire udder and perineum. Mouths of nursing calves might be affected. The clinical signs vary from small irregular fluid-filled blisters to larger areas of ulcers and scabs.



  • Difficult to eliminate once disease occurs in the farm.
  • Proper quarantine of newly purchased animals, good hygiene on farm and controlling biting flies can significantly reduce the disease.



  • No specific treatment is available.
  • Infected cows should be seperated from others.
  • Iodine dips may help disinfect teats to prevent the spread of the disease.
  • An emollient udder cream can speed healing of skin.