(472) Necrosis means that the cells and surrounding tissues have died. (Fig.10-19) It arises in one of three ways, from pressure on the skin from the environment, trauma causing necrosis of the teats, knees and the tail, or as a sequel to infectious diseases. It is common in the sucking pig.

KNEE NECROSIS
This can cause severe pain and lameness.

TEAT NECROSIS
Note the small black damaged teat ends.

TEAT NECROSIS
The anterior teats protected by cow gum.

EAR NECROSIS
This can be so severe that most of the ear is lost.