What Causes Sarcoids in Horses

Sarcoids are caused by bovine papilloma virus (BPV). However, it appears that the virus requires genetically susceptible horses in order to cause sarcoids; in other words, not every horse exposed to the virus will develop sarcoids whereas those that are genetically susceptible are likely to keep developing sarcoids.

How do you prevent sarcoids in horses?

Immune therapy: This method involves injecting the horse with substances, such as BCG, to stimulate the immune system to eliminate the tumour. It can work well for sarcoids around the eye, but several treatments are needed, often under heavy sedation.

How do you treat Sarcoids in horses?

Sarcoids, the most common skin tumor of horses, are believed to be caused by the bovine papilloma virus. They can be treated with chemotherapy drugs, such as cisplatin, or removed surgically or with lasers. However, Espy says, if any trace of a growth remains, the sarcoids will return.