Sarcoids are common skin tumours that vary from small warty lumps to large ulcerated growths. They do not spread internally but can be locally aggressive. Have any new lump checked by your vet and avoid interfering with it.
What sarcoids are
Sarcoids are benign but locally troublesome skin tumours, thought to be linked to a virus and possibly spread by flies. They do not spread to internal organs, but they can grow, ulcerate and recur, and they are the most common skin tumour seen in horses.
How to recognise them
They take several forms, from small flat or warty patches to raised nodules and larger ulcerated masses, often around the head, girth, sheath and legs. Any new or changing lump should be shown to your vet rather than assumed to be harmless.
Get a diagnosis
Because several skin conditions look similar, and because interfering with a sarcoid can make it worse, always have a vet assess a suspected sarcoid. They can advise on whether and how to treat, and sometimes leaving a small, stable sarcoid alone is the best choice.
Treatment options
Treatments range from topical creams to surgery, freezing and other methods, chosen to suit the type, size and location. There is no single best answer, and sarcoids can be frustrating and recur, so a plan from a vet experienced with them gives the best odds.
Reduce irritation
Flies may spread sarcoids and certainly irritate them, so good fly control with a fly mask and repellent helps, especially around the eyes and any existing sarcoids. Do not pick at or apply random products to a sarcoid, which can trigger aggressive growth.
