Equine Sarcoids: Welfare and Treatment Options

Sarcoids are the most common skin tumour in horses, causing variable welfare impacts from mild to severe depending on location, type, and treatment response.

Key Facts

Sarcoids are locally invasive fibroblastic skin tumours of horses caused by bovine papillomavirus
They can occur singly or as multiple lesions and never metastasise but frequently recur
Six clinical types vary from flat occult lesions to aggressive mixed or verrucous forms
Periorbital and perineal locations cause the most significant welfare problems
Treatment options include topical cisplatin cream, banding, cryotherapy, immunotherapy, and surgery

Welfare Considerations

Sarcoid welfare impacts range from mild cosmetic concern to severe functional compromise depending on lesion location and type. Periocular sarcoids obstruct vision and cause ocular irritation. Lesions at girth, saddle, or leg areas prevent proper tack fitting and exercise. Aggressive mixed sarcoids ulcerate, attract flies, and cause persistent discomfort. Treatment selection depends on lesion type and location, with topical immunotherapy (Liverpool Cream) providing good outcomes for many lesion types. Ill-considered treatment attempts including traumatising or ineffectively treating sarcoids can cause dramatic flare reactions with significantly worsened welfare outcomes.

What You Can Do

Seek veterinary assessment for any suspicious skin lesion on horses rather than attempting self-treatment
Discuss treatment options with an equine dermatologist or surgeon experienced with sarcoid management
Avoid any physical trauma to sarcoid lesions which can trigger aggressive recurrence
Monitor treated sarcoids carefully for recurrence and seek prompt reassessment if lesions return
Choose treatment methods with the best evidence base for the specific sarcoid type and location