Galliker Nadja A, Trüeb Ralph M
Department of Dermatology, University Hospital of Zurich, 8091 Zürich, Switzerland.
Int J Trichology. 2012 Jan;4(1):19-22. doi: 10.4103/0974-7753.96080.
Female androgenetic alopecia (FAGA) is a frequent cause of hair loss in women. Standard diagnostic methods are clinical inspection, pull test, and trichogram. It has been suggested that scalp dermoscopy (trichoscopy) revealing diversity of hair shaft diameter >20% is diagnostic of FAGA.
To evaluate the value of trichoscopy as compared to the trichogram for the diagnosis of FAGA.
Retrospective case study of 162 women with the complaint of hair loss who underwent trichoscopic examination and trichograms.
Of all women diagnosed FAGA (55%), 62% were diagnosed by trichogram, 72% by trichoscopy with a cut-off point of 20%, and 100% irrespective of the degree of diversity of hair shaft diameter.
Trichoscopy is a valuable and superior method to the trichogram for diagnosis of FAGA, especially in early cases, with the highest yield irrespective of the suggested cut-off of 20% diversity of hair shaft.
女性雄激素性脱发（FAGA）是女性脱发的常见原因。标准诊断方法包括临床检查、拔毛试验和毛发镜检。有人提出，头皮皮肤镜检查（毛发镜检查）显示毛干直径差异>20%可诊断为FAGA。
评估毛发镜检查与毛发镜检在诊断FAGA方面的价值。
对162例主诉脱发的女性进行回顾性病例研究，这些女性均接受了毛发镜检查和毛发镜检。
在所有被诊断为FAGA的女性（55%）中，62%通过毛发镜检确诊，72%通过毛干直径差异截断值为20%的毛发镜检查确诊，无论毛干直径差异程度如何，100%可确诊。
对于FAGA的诊断，毛发镜检查是一种有价值且优于毛发镜检的方法，尤其是在早期病例中，无论毛干直径差异建议截断值为20%与否，其诊断率最高。
