I’d like to ask a question about my horse’s skin problem–depigmentation. He is a 10-year-old chestnut Hanoverian gelding with dark eyes and eyelids. But now there is a pink spot on his left upper eyelid and I think it’s getting larger.

Many equine skin problems have not been fully elucidated (analyzed and explained) yet, but experienced veterinarians often will recognize a problem and confirm a tentative diagnosis, if possible, with an appropriate test. Owners need to realize that many disorders of the equine skin have not been subjected to close clinical or scientific scrutiny, and although the clinical features are known