What Pastern Dermatitis Actually Is
Pastern dermatitis is a broad term for inflammation and irritation of the skin on the pasterns and fetlocks. It can show up as pink or red skin, crusty scabs, hair loss, and sometimes swelling or discomfort. When mud and moisture are part of the picture, many riders call it mud fever or scratches.
The outer picture is messy. Underneath, the skin barrier has been worn down by a mix of moisture, friction, microbes, and sometimes sunlight on pale skin.