Abraham Leonardo Spagnol, Torres Fernanda Nogueira, Azulay-Abulafia Luna
Instituto de Dermatologia e Estética do Rio de Janeiro, Brazil.
An Bras Dermatol. 2010 Sep-Oct;85(5):723-6. doi: 10.1590/s0365-05962010000500022.
Trichotillomania and patchy alopecia areata have similar clinical and dermoscopic features.
In trichotillomania, dermoscopy shows decreased hair density, short vellus hair, broken hairs with different shaft lengths, coiled hairs, short vellus hair, trichoptilosis, sparse yellow dots, which may or may not contain black dots and no exclamation mark hairs.
In the case of patchy alopecia and broken hairs, the absence of exclamation mark hairs suggests a diagnosis of trichotillomania. On the other hand, the finding of yellow dots without black dots does not exclude it.
拔毛癖和斑秃在临床及皮肤镜特征上相似。
在拔毛癖中，皮肤镜检查显示毛发密度降低、毳毛短、毛发干长度不同的断发、卷曲毛发、毳毛短、毛发纵裂、稀疏的黄点，黄点可能有或没有黑点，且无惊叹号样毛发。
对于斑秃和断发的情况，无惊叹号样毛发提示诊断为拔毛癖。另一方面，发现无黑点的黄点并不能排除该病。
