Diamond-shaped skin lesions - Atlas of swine pathology

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Possible causes: Erysipela

The diamond-shaped lesions are characteristic of Erysipelas; the causative agent is Erysipelotrix rhusiopathiae.

Lesions are best observed after slaughter, when dermal rashes are very clear; skin lesions with slightly raised diamond-shaped red spots, each side measuring about 2 cm.

Lesions may occur throughout the surface of the carcass or in a more localized area.