Hoolahan Danielle E, White Stephen D, Outerbridge Catherine A, Shearer Patrick L, Affolter Verena K
William R. Pritchard Veterinary Medical Teaching Hospital, University of California, Davis, CA 95616, USA.
Vet Dermatol. 2013 Apr;24(2):282-e64. doi: 10.1111/vde.12013. Epub 2013 Feb 22.
Alopecia areata (AA) causes hair loss due to inflammatory changes within and around hair bulbs and lower portions of the hair follicles. Documentation of AA in horses is limited to a few case reports.
HYPOTHESIS/OBJECTIVES: The aim of this retrospective study was to characterize equine AA by describing patterns in age, sex, breed and lesion distribution in a series of cases. An attempt was made to characterize the long-term course of the disease by surveying owners of affected horses.
Computerized records from 1 January 1980 to 1 July 2011 yielded 15 horses.
Descriptive statistics were calculated for age at presentation, breed, sex, dermatological signs, season when diagnosed and any recurrence of AA. The breed and sex distribution of horses with AA was compared with the equine hospital population during the study period.
The prevalence of AA was 0.017%. Appaloosas and quarter horses were the most commonly recorded breeds. The median age was 9 years, with an age range from 3 to 15 years. Alopecia was the primary dermatological abnormality in all horses and commonly affected the mane, tail and face. More than half of the horses presented for other medical conditions. Five of seven (71.4%) owners who returned completed surveys reported a seasonal pattern to the disease, which usually worsened in spring and summer.
Alopecia areata is a rare disease in horses, and is typically cosmetic in nature. To the authors' knowledge, this is the first study investigating the epidemiology of equine AA.
斑秃（AA）是由于毛球内部及周围和毛囊下部的炎症变化导致的脱发。马斑秃的文献记录仅限于少数病例报告。
假设/目的：这项回顾性研究的目的是通过描述一系列病例的年龄、性别、品种和病变分布模式来对马斑秃进行特征描述。通过对患病马的主人进行调查，试图对该病的长期病程进行特征描述。
1980年1月1日至2011年7月1日的计算机记录产生了15匹马。
计算就诊时的年龄、品种、性别、皮肤体征、诊断季节以及斑秃的任何复发情况的描述性统计数据。将患有斑秃的马的品种和性别分布与研究期间的马医院群体进行比较。
斑秃的患病率为0.017%。阿帕卢萨马和夸特马是记录最常见的品种。中位年龄为9岁，年龄范围为3至15岁。脱发是所有马匹的主要皮肤异常，通常影响鬃毛、尾巴和面部。超过一半的马因其他医疗状况就诊。七位回复完整调查问卷的主人中有五位（71.4%）报告该病有季节性模式，通常在春季和夏季恶化。
斑秃在马中是一种罕见疾病，通常本质上是美容性的。据作者所知，这是第一项调查马斑秃流行病学的研究。
