Aural plaques in horses are also called papillary acanthoma or ear papillomas and result from papillomavirus. The plaques present as whitish or gray flaky sores on the inside of your horse’s ear. Present in one or both of the horse’s ears, they are somewhat raised and appear scaly.
It is thought that the plaques are a scar tissue that is the result of the ongoing inflammatory response of your horse’s body to a papilloma viral infection, likely occurring as a result of biting black flies. In some horses the aural plaques are only a cosmetic problem; typically, they don’t itch much and are not painful.
In other horses, they lead to the horse’s ear or ears being extremely sensitive.
Also known as papillary acanthoma or ear papillomas, aural plaques in horses are a result of papillomavirus, presenting as white or gray sores on the inside of one or both of the horse’s ear.