Couppoussamy Kanmani Indra, Devanda Rajendra
Department of Dermatology and STD, Mahatma Gandhi Medical College and Research Institute, Sri Balaji Vidyapeeth (Deemed to be University), Puducherry, India.
Department of Dermatology and STD, National Institute of Medical Sciences and Research, Jaipur, Rajasthan, India.
Indian Dermatol Online J. 2024 Aug 8;15(5):801-804. doi: 10.4103/idoj.idoj_855_23. eCollection 2024 Sep-Oct.
Dermatitis cruris pustulosa et atrophicans (DCPA) is a chronic superficial folliculitis that can cause scarring alopecia if left untreated. Hardly any studies are there describing the dermoscopic features of DCPA. Dermoscopy can be a useful tool for diagnosing DCPA in addition to clinical and histopathological features and for differentiating other conditions like superficial folliculitis, folliculitis decalvans, and pseudofolliculitis.
AIMS/OBJECTIVES: The aim of this retrospective study was to describe the dermoscopic features of 30 patients with DCPA at a tertiary care center in South India.
A retrospective study of clinical and biopsy-proven cases of DCPA at a tertiary care center in South India.
Thirty patients of DCPA of skin phototype IV or V were studied. Male preponderance of DCPA was noted in our study. Lower extremities 28 (93.3%) and upper extremities 2 (6.7%) were the common sites of involvement. The most common findings noted in dermoscopy were follicular-based pustules in 30 (100%) patients, follicular white structureless area in 16 (53.3%), perifollicular collarette of scales in 12 (40%), diffuse background dotted blood vessels in 12 (40%), and the absence of follicular orifices in 12 (40%). Other findings were yellow or hemorrhagic scales, perifollicular linear white lines, broken hair, and perifollicular dotted blood vessels. Pigmentary patterns observed were dark brown pigmentation, blue-grey globules, blue-grey dots, and accentuation of the pigmentary network.
The limitations of the study were the retrospective nature of the study, the small sample size, and the lack of a comparison group.
The predominant dermoscopic features observed in our patients were follicular-based pustules, follicular white structureless areas, perifollicular collarette of scales, diffuse background dotted blood vessels, and the absence of follicular orifices. Vascular and pigmentary patterns were less commonly noted.
脓疱萎缩性小腿皮炎（DCPA）是一种慢性浅表性毛囊炎，如果不治疗可导致瘢痕性脱发。几乎没有研究描述DCPA的皮肤镜特征。除了临床和组织病理学特征外，皮肤镜对于诊断DCPA以及鉴别其他疾病如浅表性毛囊炎、脱发性毛囊炎和假性毛囊炎可能是一种有用的工具。
本回顾性研究的目的是描述印度南部一家三级医疗中心30例DCPA患者的皮肤镜特征。
对印度南部一家三级医疗中心临床及活检证实的DCPA病例进行回顾性研究。
研究了30例皮肤光型为IV或V型的DCPA患者。本研究中DCPA以男性居多。最常见的受累部位是下肢28例（93.3%）和上肢2例（6.7%）。皮肤镜检查中最常见的表现为30例（100%）患者有毛囊性脓疱、16例（53.3%）有毛囊白色无结构区、12例（40%）有毛囊周围鳞屑领圈、12例（40%）有弥漫性背景点状血管、12例（40%）无毛囊开口。其他表现为黄色或出血性鳞屑、毛囊周围线状白线、断发和毛囊周围点状血管。观察到的色素沉着模式有深棕色色素沉着、蓝灰色小球、蓝灰色小点和色素网增粗。
本研究的局限性在于其回顾性、样本量小以及缺乏对照组。
我们的患者中观察到的主要皮肤镜特征是毛囊性脓疱、毛囊白色无结构区、毛囊周围鳞屑领圈、弥漫性背景点状血管和无毛囊开口。血管和色素沉着模式较少见。
