Knottenbelt Derek C
Equine Internal Medicine, University of Glasgow, Weipers Equine Centre Bearsden Road, Glasgow G611QH, Scotland.
Vet Clin North Am Equine Pract. 2016 Aug;32(2):263-81. doi: 10.1016/j.cveq.2016.04.005. Epub 2016 Jun 18.
Few skin diseases specifically or exclusively affect older horses and donkeys. Hypertrichosis (hirsutism) associated with pituitary pars intermedia dysfunction is probably the most recognized and best understood exception and is the most common age-related skin condition in equids. Many other conditions are known to be more serious in older horses. Horses affected with immune-compromising conditions can be more severely affected by infectious diseases of the skin or heavy and pathologically significant parasitism. Neoplasia of the skin is probably more prevalent and worse in older horses, although many of the more serious skin tumors develop initially at a younger age.
很少有皮肤病专门或仅仅影响老年马和驴。与垂体中间部功能障碍相关的多毛症（毛发过多）可能是最广为人知且理解最透彻的例外情况，也是马科动物中最常见的与年龄相关的皮肤病症。已知许多其他病症在老年马中更为严重。患有免疫功能低下病症的马可能会受到皮肤传染病或严重且具有病理学意义的寄生虫感染的更严重影响。皮肤肿瘤在老年马中可能更普遍且情况更糟，尽管许多更严重的皮肤肿瘤最初是在较年轻时发生的。
