Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida.
Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida.
J Am Acad Dermatol. 2018 Oct;79(4):702-705. doi: 10.1016/j.jaad.2018.04.015. Epub 2018 Apr 14.
Onychotillomania is a nail-picking disorder characterized by nail dystrophy and abnormal morphology of the nail plate, nail bed, and periungual skin.
The purpose of this study was to describe the dermoscopic features of onychotillomania.
A retrospective study of the dermoscopy images of 36 patients affected by onychotillomania. The images were reviewed independently by both authors and a list of dermatoscopic findings was established.
Scales were observed in 34 cases (94.4%). Absence of the nail plate was seen in 30 cases (83.3%). Wavy lines were observed in 25 cases (69.4%). Hemorrhages were observed in 23 cases (63.9%). Crusts were seen in 22 cases (61.1%). Nail bed pigmentation was observed in 17 cases (47.2%). Speckled dots were observed in 14 cases (38.9%). Nail plate melanonychia was observed in 4 cases (11.1%).
Limitations included small sample size and retrospective study.
Absence of the nail plate with multiple obliquely oriented nail bed hemorrhages, nail bed gray pigmentation, and presence of wavy lines are characteristic findings of onychotillomania and not seen in other nail diseases.
拔甲癖是一种指甲抠挖障碍，其特征为指甲营养不良和甲板、甲床和甲周皮肤的异常形态。
本研究旨在描述拔甲癖的皮肤镜特征。
对 36 例拔甲癖患者的皮肤镜图像进行回顾性研究。两位作者分别独立对图像进行了审查，并建立了一系列皮肤镜表现。
在 34 例（94.4%）中观察到鳞屑。30 例（83.3%）中未见甲板。25 例（69.4%）中观察到波浪线。23 例（63.9%）中观察到出血。22 例（61.1%）中观察到鳞屑。17 例（47.2%）中观察到甲床色素沉着。14 例（38.9%）中观察到斑点状点。4 例（11.1%）中观察到甲板黑素甲。
本研究的局限性包括样本量小和回顾性研究。
未见甲板伴多个斜向排列的甲床出血、甲床灰色色素沉着和出现波浪线是拔甲癖的特征性表现，不会出现在其他甲病中。
