Background

Eyebrow loss (madarosis) is a frequent sign of frontal fibrosing alopecia (FFA), and it can be the first sign of the disease.

Objective

To describe trichoscopy findings of FFA on the eyebrows.

Methods

The analysis included 151 women with histologically proven diagnosis of FFA and eyebrow loss. Trichoscopy of the eyebrow area was performed with either a FotoFinder videodermatoscope or handheld dermoscope DermLite II pro.

Results

The most frequent signs on trichoscopy were yellow dots (92.7%), multiple pinpoint dots (79.5%), short thin hairs/vellus (76.2%), black dots (66.2%), and dystrophic hairs (60.9%). Tapering hairs were found in 21 (13.9%) patients and dystrophic hairs in 92 (60.9%) patients.

Limitations

Inner limitations of a case series (there was no comparison with healthy control individuals or patients with other hair disorders) and lack of histologic correlation to the trichoscopy findings.

Conclusions

Although FFA is a scarring alopecia, the most common trichoscopy signs found in the eyebrows are usually related to noncicatricial alopecia. Therefore, in most cases, trichoscopy of the eyebrows does not resemble the trichoscopy of FFA on the scalp. Black dots, dystrophic hairs, and broken hairs are frequent signs. Occasionally, tapered hairs can be present on the eyebrows in FFA, leading to misdiagnosis of alopecia areata.

中文翻译：

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眉毛前额纤维化性脱发的毛镜检查结果：附151例研究

背景

眉毛脱落（madarosis）是额叶纤维性脱发（FFA）的常见征兆，它可能是该疾病的第一个征兆。

客观的

描述眉毛上 FFA 的毛发镜检查结果。

方法

该分析包括 151 名经组织学证实诊断为 FFA 和眉毛脱落的女性。使用 FotoFinder 视频皮肤镜或手持皮肤镜 DermLite II pro 对眉毛区域进行毛发镜检查。

结果

毛发镜检查中最常见的体征是黄点 (92.7%)、多个精确点 (79.5%)、短而细的毛发/毳 (76.2%)、黑点 (66.2%) 和营养不良的毛发 (60.9%)。在 21 名 (13.9%) 患者中发现了逐渐变细的毛发，在 92 名 (60.9%) 患者中发现了营养不良的毛发。

限制

病例系列的内部局限性（与健康对照个体或患有其他毛发疾病的患者没有比较）以及与毛发镜检查结果缺乏组织学相关性。

结论

尽管 FFA 是一种瘢痕性脱发，但在眉毛中发现的最常见的毛发镜检查体征通常与非瘢痕性脱发有关。因此，在大多数情况下，眉毛的毛发检查与头皮上的 FFA 毛发检查不同。黑点、营养不良的毛发和断发是常见的迹象。有时，FFA的眉毛上会出现锥形毛发，导致斑秃的误诊。