In a cross breed, 6 months old, pig carcass skin lesions were observed in the back and hindquarters

The lesions were circular and bright red with brown coloration in the central areas. Lesions were coalescing and clearly showed a radial pattern. Unfortunately samples could not be submitted for laboratory analysis.

Despite the particular appearance of the lesions we could not determine which was it most likely cause. It appears to be an inflammatory lesion (dermatitis) but of unknown etiology.

Within the differential diagnosis one might include:

  • Dermatophytosis (ringworm): a fungal growth could fit with the radial pattern of the lesions.
  • Pityriasis rosea.
  • Erysipelas: Although the characteristic diamond morphology of the lesions was not observed.

Any of these diseases, perhaps complicated with secondary bacterial infections, could be candidates to be considered for a possible diagnosis.

We invite you to comment on this case (at the end of the post) if you’ve seen similar lesions before and we encourage you, if you happen to see them again, to submit pictures and samples for laboratory analysis.

Have a great summer!

Multifocal coalescent lesions with an evident radial pattern.

Multifocal coalescent lesions with an evident radial pattern.

Multifocal coalescent lesions with an evident radial pattern.

A closer look. Multifocal coalescent lesions with an evident radial pattern.