Autoimmune diseases affecting skin melanocytes in dogs, cats and horses: vitiligo and the uveodermatological syndrome: a comprehensive review.
Authors: Tham Heng L, Linder Keith E, Olivry Thierry
Journal: BMC veterinary research
Summary
# Editorial Summary Vitiligo and uveodermatological syndrome represent two distinct autoimmune conditions targeting melanocytes across canine, feline and equine populations, yet their pathogenesis, optimal treatment protocols and prognosis remain incompletely understood in veterinary practice. This comprehensive review synthesised existing literature on clinical presentation, histopathological findings and treatment outcomes for vitiligo across all three species, alongside detailed examination of the canine uveodermatological syndrome and its parallels with Vogt-Koyanagi-Harada syndrome in humans. Key findings demonstrate that vitiligo in companion animals and horses mirrors the progressive depigmentation patterns seen in humans, though treatment efficacy remains variable and unpredictable across species, whilst the canine uveodermatological syndrome—characterised by concurrent ocular and dermatological manifestations—closely resembles the incomplete human VKH variant and carries significant risk of blindness if diagnosis is delayed. For equine and companion animal practitioners, early recognition of depigmented patches, particularly around the head and limbs, warrants thorough ophthalmic examination in dogs to rule out concurrent uveitis, and prompt initiation of immunosuppressive therapy may be critical for preserving vision and limiting further melanocyte destruction. The authors underscore that despite growing clinical experience, standardised treatment guidelines for vitiligo remain elusive, suggesting continued collaborative research and case documentation across veterinary disciplines is essential to advance management strategies for these progressive conditions.
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Practical Takeaways
- •Recognize vitiligo and uveodermatological syndrome as distinct autoimmune melanocyte diseases requiring different management approaches; uveodermatological syndrome especially demands urgent intervention to preserve vision
- •Treatment protocols for vitiligo remain inconsistent across species; tailor therapy based on individual case progression and response monitoring
- •Screen horses and companion animals with depigmented patches for systemic involvement, particularly ocular disease in dogs, as early detection improves outcomes
Key Findings
- •Vitiligo and uveodermatological syndrome are the two primary autoimmune diseases affecting skin melanocytes in companion animals and horses
- •Canine, feline, and equine vitiligo share many clinical and pathological features with human vitiligo
- •Canine uveodermatological syndrome resembles incomplete Vogt-Koyanagi-Harada syndrome in humans
- •Early diagnosis and aggressive treatment of uveodermatological syndrome are critical to prevent blindness in affected dogs