Triangular temporal alopecia - two case reports, dermoscopy and review

A 47-years-old man presented a localized hair loss in the left temporal region since birth. On dermatological examination was observed triangular alopecia area, well defined, measuring 4 x 3cm (Figure 1) without skin changes, such as atrophy, peeling or inflammation. Dermoscopy (DermLite DL3N; 3Gen) reveled in the injured area vellus hairs, surrounded by normal scalp with terminals hairs (Figure 2). No yellow spots, exclamation mark hairs or cadaver hairs were detected. He denied similar cases in the family.

[1]  C. Belajouza,et al.  Temporal Triangular Alopecia: Trichoscopic Diagnosis. , 2019, Skinmed.

[2]  J. Shapiro,et al.  Alopecia areata: Disease characteristics, clinical evaluation, and new perspectives on pathogenesis. , 2018, Journal of the American Academy of Dermatology.

[3]  R. Grimalt,et al.  Clinical and trichoscopic characteristics of temporal triangular alopecia: A multicenter study. , 2016, Journal of the American Academy of Dermatology.

[4]  A. Güleç,et al.  Temporal triangular alopecia: significance of trichoscopy in differential diagnosis , 2015, Journal of the European Academy of Dermatology and Venereology : JEADV.

[5]  G. Choi,et al.  Successful Treatment of Temporal Triangular Alopecia with Topical Minoxidil , 2013, Annals of dermatology.

[6]  Jimin Chung,et al.  Successful hair transplantation for treatment of acquired temporal triangular alopecia. , 2012, Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.].

[7]  M. Yamazaki,et al.  Temporal triangular alopecia and a review of 52 past cases , 2010, The Journal of dermatology.

[8]  C. F. Marshall,et al.  A Manual of Regional Topographical Dermatology , 2010 .

[9]  K. Smith,et al.  Clinical and histologic findings in temporal triangular alopecia. , 1994, Journal of the American Academy of Dermatology.

[10]  H. Bargman.  Congenital triangular alopecia. , 1988, Journal of the American Academy of Dermatology.