One of the things that many yards and horse owners struggle with each winter is Mud Fever. Mud fever refers to a w ide range of equine skin reactions, which are primarily caused by an infectious agent called dermatophilus congolensis, which thrives in muddy wet conditions. It can also be referred to as pastern dermatitis, greasy heels or cracked heels and is frustratingly common in wet weather. The infection can stay dormant in the skin, becoming active when the skin is compr