Rain scald is a skin infection mainly on the backs of horses when left out at grass in severe wet weather conditions. It is caused by the same bacteria that causes Mud Fever. When the bacteria penetrates the soft wet skin on the back it causes the skin to weep and the coat to become matted with flaky, crusty skin. Infection with other bacteria after the initial damage can make the condition much worse.

Horses with Rain Scald should be stabled until the skin has healed and the coat kept dry. Large scabs are removed gently and antiseptic washes containing chlorhexidine or iodine can be used. Antibiotics by mouth are necessary in severe cases. Supplements as for Mud Fever can be used to assist the body’s recovery.