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. 

• 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.