Department of Dermatology, Taipei-Veterans General Hospital, National Defense Medical Center, Taipei, Taiwan; Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan.
Int J Dermatol. 2014 Jan;53(1):51-5. doi: 10.1111/j.1365-4632.2012.05702.x. Epub 2013 May 15.
Senile gluteal dermatosis (SGD) is a common genital dermatosis but has gained little attention before. A large-scale clinical study of this disease is lacking.
We examined 162 consecutive outpatients with gluteal skin diseases of different causes. Fourteen skin biopsies were performed. Patient's age, gender, body mass index (BMI), way of sitting or lying, treatment response, and underlying systemic diseases were recorded.
About 137 (85%) patients could be defined as SGD. These patients, with a mean age of 79.4 ± 40.7 years and a mean BMI of 21.7 ± 10.8, presented with either partial (n = 43, 31%) or full-blown (n = 94, 69%) SGD lesions characterized by the sign of so-called "three corners of a triangle": brownish plaques on the gluteal cleft and each side of the buttocks. Male/female ratio was 130/7. Itching or pain of varying intensity was reported by 50 patients (36%) and 14 patients (10%), respectively. Eighty-six patients (53%) presented with horizontal hyperkeratotic ridges, a characteristic sign of SGD. Most patients spent most of the day sitting but reported no special way of sitting or lying. More than half of patients with SGD claimed no response to topical steroids and/or keratolytics. In comparison with patients with SGD, SGD-free patients were younger (61.3 ± 36 years, P = 0.0005) and heavier (BMI 26.2 ± 15.6, P < 0.0001) but showed no significant difference in the frequency of underlying systemic diseases.
SGD is a common dermatosis, mostly affecting the thinner elderly. Friction, pressures and long hours sitting seemed to be important factors to trigger this dermatosis.
老年性臀周皮肤病（SGD）是一种常见的生殖器皮肤病，但以前并未受到太多关注。目前缺乏对这种疾病的大规模临床研究。
我们检查了 162 例不同病因的臀周皮肤病连续门诊患者。进行了 14 例皮肤活检。记录了患者的年龄、性别、体重指数（BMI）、坐姿或卧位、治疗反应和潜在的全身性疾病。
约 137 例（85%）患者可被定义为 SGD。这些患者的平均年龄为 79.4 ± 40.7 岁，平均 BMI 为 21.7 ± 10.8，表现为部分（n = 43，31%）或完全（n = 94，69%）的 SGD 病变，其特征是所谓的“三角形的三个角”：臀裂和臀部两侧的褐色斑块。男女比例为 130/7。50 例（36%）和 14 例（10%）患者分别报告有不同程度的瘙痒或疼痛。86 例（53%）患者表现出水平性角化过度脊，这是 SGD 的一个特征性表现。大多数患者大部分时间都坐着，但报告没有特殊的坐姿或卧位。超过一半的 SGD 患者声称对局部类固醇和/或角质松解剂无反应。与 SGD 患者相比，无 SGD 患者更年轻（61.3 ± 36 岁，P = 0.0005）且更重（BMI 26.2 ± 15.6，P < 0.0001），但潜在全身性疾病的发生率无显著差异。
SGD 是一种常见的皮肤病，主要影响较瘦的老年人。摩擦、压力和长时间坐着似乎是触发这种皮肤病的重要因素。
