Rainscald (also known as dermatophilosis or rain rot) is a common skin disease in horses that is caused by Dermatophilus congolensis. This is the same organism that causes Mud fever in horses.
Horses are usually affected on the back, head, and neck, where insects commonly bite, and the legs, which are commonly infected if the horse is kept in moist footing. Initially, the horse will display a matted coat and bumps which will then progress to crusty scabs and lesions. The animal may also be itchy and display signs of discomfort.
This remedy will support the skin to heal.