Dermoscopic clues to distinguish trichotillomania from patchy alopecia areata.

@article{Abraham2010DermoscopicCT,
  title={Dermoscopic clues to distinguish trichotillomania from patchy alopecia areata.},
  author={Leonardo Spagnol Abraham and Fernanda Nogueira Torres and Luna Azulay-Abulafia},
  journal={Anais brasileiros de dermatologia},
  year={2010},
  volume={85 5},
  pages={
          723-6
        }
}
BACKGROUND Trichotillomania and patchy alopecia areata have similar clinical and dermoscopic features. OBSERVATIONS 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. CONCLUSIONS In the case of patchy alopecia and broken hairs, the absence of exclamation mark hairs suggests a… CONTINUE READING

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