Hemorrhagic discharge from the anus (melena) is sometimes observed. Exanthemas are very evident (pinkish almost purple skin due to intense hyperemia) and/or cyanotic foci, which appear as irregular purple-colored marks on the skin of the extremities, ears, chest, abdomen, and perineum. Hematomas and necrotic areas may be observed, although these lesions are more intense in pigs infected with moderately virulent isolates. Abortion frequently occurs in gestating females.