Pityriasis rosea

Pityriasis rosea is a noncontagious dermatitis present in young pigs 3-16 weeks old.


It is a sporadic disease that affects young pigs from 3-16 weeks of age.



Sows and nursing piglets

  • It is not present.

Nursery and fattening

  • It is characterized by large, coalescing lesions, similar in appearance to ringworm.
  • Lesions are circular and usually start in the abdomen and extend to the hind legs.  In serious cases they can affect the whole body. 


Causes / Contributing Factors

  • It is believed to be hereditary, particularly in the Landrace breed.



  • Based on clinical signs.



  • None, the clinical condition resolves on its own in 6 to 8 weeks.