{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,18]],"date-time":"2025-10-18T00:18:43Z","timestamp":1760746723984,"version":"build-2065373602"},"reference-count":20,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2025,10,17]],"date-time":"2025-10-17T00:00:00Z","timestamp":1760659200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Diagnostics"],"abstract":"<jats:p>We present the case of an 18-year-old female patient who attended the Dermatology Outpatient Clinic for a routine total body examination. Clinical evaluation revealed a triangular, non-scarring alopecic patch in the left temporal region, which the patient reported had been present since birth. Based on clinical and trichoscopic findings, a diagnosis of temporal triangular alopecia (TTA) was established. Given the non-progressive nature of the condition and the absence of any impact on quality of life, no treatment was initiated at the patient\u2019s request.<\/jats:p>","DOI":"10.3390\/diagnostics15202621","type":"journal-article","created":{"date-parts":[[2025,10,17]],"date-time":"2025-10-17T10:28:36Z","timestamp":1760696916000},"page":"2621","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Temporal Triangular Alopecia\u2014Clinical and Dermoscopic Features of a Rare Entity"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-4067-2333","authenticated-orcid":false,"given":"Beata","family":"Zag\u00f3rska","sequence":"first","affiliation":[{"name":"Department and Clinic of Dermatology, Venerology and Allergology, Medical University of Gdansk, 80-214 Gdansk, Poland"},{"name":"Department and Clinic of Dermatology, Venerology and Allergology, University Clinical Center, 80-214 Gdansk, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2711-0579","authenticated-orcid":false,"given":"Jakub","family":"\u017b\u00f3\u0142kiewicz","sequence":"additional","affiliation":[{"name":"Department and Clinic of Dermatology, Venerology and Allergology, Medical University of Gdansk, 80-214 Gdansk, Poland"},{"name":"Department and Clinic of Dermatology, Venerology and Allergology, University Clinical Center, 80-214 Gdansk, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2748-9315","authenticated-orcid":false,"given":"Urszula","family":"Mai\u0144ska","sequence":"additional","affiliation":[{"name":"Department and Clinic of Dermatology, Venerology and Allergology, Medical University of Gdansk, 80-214 Gdansk, Poland"},{"name":"Department and Clinic of Dermatology, Venerology and Allergology, University Clinical Center, 80-214 Gdansk, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8947-5675","authenticated-orcid":false,"given":"Martyna","family":"S\u0142awi\u0144ska","sequence":"additional","affiliation":[{"name":"Department and Clinic of Dermatology, Venerology and Allergology, Medical University of Gdansk, 80-214 Gdansk, Poland"},{"name":"Department and Clinic of Dermatology, Venerology and Allergology, University Clinical Center, 80-214 Gdansk, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,10,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"634","DOI":"10.1016\/j.jaad.2016.04.053","article-title":"Clinical and trichoscopic characteristics of temporal triangular alopecia: A multicenter study","volume":"75","author":"Grimalt","year":"2016","journal-title":"J. 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Dermatol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"301","DOI":"10.1111\/j.1525-1470.1995.tb00187.x","article-title":"Congenital triangular alopecia (Brauer nevus)","volume":"12","author":"Camacho","year":"1995","journal-title":"Pediatr. Dermatol."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"652","DOI":"10.1111\/j.1525-1470.2008.00811.x","article-title":"Videodermoscopy: A useful tool for diagnosing congenital triangular alopecia","volume":"25","author":"Iorizzo","year":"2008","journal-title":"Pediatr. Dermatol."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1159\/000445721","article-title":"Trichoscopy of Focal Alopecia in Children\u2014New Trichoscopic Findings: Hair Bulbs Arranged Radially along Hair-Bearing Margins in Aplasia Cutis Congenita","volume":"2","author":"Rakowska","year":"2016","journal-title":"Ski. Appendage Disord."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"e2024142","DOI":"10.5826\/dpc.1403a142","article-title":"Line-Field Optical Coherence Tomography: Usefulness in the Non-Invasive Differential Diagnosis of Congenital Alopecia of Infancy","volume":"14","author":"Tognetti","year":"2024","journal-title":"Dermatol. Pract. Concept"},{"key":"ref_12","first-page":"452","article-title":"Temporal Triangular Alopecia","volume":"14","author":"Sharma","year":"2022","journal-title":"Indian Dermatol. 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Surg."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"32","DOI":"10.4103\/ijt.ijt_87_19","article-title":"An Unusual Case of Congenital Triangular Alopecia on Frontal Area Successfully Treated by Surgery","volume":"12","author":"Seol","year":"2020","journal-title":"Int. J. Trichology"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"126","DOI":"10.4103\/ijt.ijt_52_20","article-title":"Transient Treatment Response of Platelet-rich Plasma Injection for Temporal Triangular Alopecia: A Case Report with Dermoscopic Examination Follow-up","volume":"12","author":"Lueangarun","year":"2020","journal-title":"Int. J. Trichology"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"387","DOI":"10.5021\/ad.2013.25.3.387","article-title":"Successful treatment of temporal triangular alopecia with topical minoxidil","volume":"25","author":"Bang","year":"2013","journal-title":"Ann. Dermatol."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"e13371","DOI":"10.1111\/dth.13371","article-title":"Rapid response of topical minoxidil in congenital triangular alopecia","volume":"33","author":"Pathania","year":"2020","journal-title":"Dermatol. Ther."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1147","DOI":"10.2147\/CCID.S458753","article-title":"Congenital Triangular Alopecia: A Case of Effective Response with 5% Topical Minoxidil in a Male Adolescent","volume":"17","author":"Sutisna","year":"2024","journal-title":"Clin. Cosmet. Investig. 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