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Case Reports
. 2020 Mar-Apr;12(2):89-92.
doi: 10.4103/ijt.ijt_4_20. Epub 2020 May 5.

Congenital Triangular Alopecia - A Case Report

Dhruv Ramanbhai Patel  1 , Jinal Jainendrabhai Tandel  1 , Pragya Ashok Nair  1
Affiliations
Case Reports

Congenital Triangular Alopecia - A Case Report

Dhruv Ramanbhai Patel et al. Int J Trichology. 2020 Mar-Apr.

Abstract

Congenital triangular alopecia also known as temporal triangular alopecia or Brauer nevus may be present at birth or acquired during the first decade of life. It can present as triangular, oval, or lancet-shaped patch of alopecia. It may be misdiagnosed as alopecia areata, traction alopecia, trichotillomania, tinea capitis, and aplasia cutis congenita. Histopathological features and dermoscopic features help in its diagnosis. There is no effective treatment for it and, in most cases, there is no need for therapeutic intervention. Therapeutic modalities include topical minoxidil, surgical excision, and hair transplantation.

Keywords: Dermatoscopy; minoxidil; temporal triangular alopecia; vellus hair.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
Single, well.defined, triangular patch of alopecia measuring approximately 4 cm × 2 cm with sparse hair in between over the right frontotemporal region
Figure 2
Figure 2
Dermoscopy showed normal follicular openings with vellus hairs surrounded by terminal hairs on the outskirts
Figure 3
Figure 3
(a and b) Clinical and dermoscopy after 3 months of minoxidil showing newly developed vellus hair
See this image and copyright information in PMC

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