Dermatology: Practical and Conceptual Image Letter | Dermatol Pract Concept. 2022;12(3):e2022114 1 Dermatology Practical & Conceptual Dermoscopy for Facial Leukotrichia in Vitiligo: an Important Step for a Better Treatment Decision Mohammed Ibrahim AlJasser1,2 1 Division of Dermatology, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia 2 King Abdullah International Medical Research Center, Riyadh, Saudi Arabia Citation: AlJasser MI. Dermoscopy for facial leukotrichia in vitiligo: An important step for a better treatment decision. Dermatol Pract Concept. 2022;12(3):e2022114. DOI: https://doi.org/10.5826/dpc.1203a114 Accepted: November 16, 2021; Published: July 2022 Copyright: ©2022 AlJasser. This is an open-access article distributed under the terms of the Creative Commons Attribution- NonCommercial License (BY-NC-4.0), https://creativecommons.org/licenses/by-nc/4.0/, which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original authors and source are credited. Funding: None. Competing interests: None. Corresponding author: Mohammed I. AlJasser MBBS FRCPC, Associate Professor, Division of Dermatology, King Saud bin Abdulaziz University for Health Sciences, P.O. Box 3660, Riyadh 11481, Saudi Arabia, Tel: +966-11-4299999 ext. 95211, Fax: +966-11-429 9999 Ext. 95148, E-mail: jasserm@ksau-hs.edu.sa; mj_derma@hotmail.com Case Presentation A 14-year-old female with stable generalized vitiligo (body surface area 1%) was being treated with excimer laser and tacrolimus 0.1% ointment. She showed some re-pigmentation in some body sites such as the knees. How- ever, facial patches showed very minimal re-pigmentation despite receiving many sessions of excimer laser. Dermos- copy showed leukotrichia affecting the whole vitiliginous facial areas (Figure 1). The patient was therefore advised to undergo melanocyte transplantation. Topical and laser ther- apy were discontinued. Teaching point Leukotrichia within vitiligo is known to be associated with poor response to medical and light therapy. Therefore, it is important to identify leukotrichia in order to predict re- sponse to treatment within a given body site. It is often dif- ficult to detect leukotrichia clinically especially in areas with fine vellus hair such as the face. Dermoscopy has recently emerged as a valuable tool in the assessment of vitiligo, es- pecially for disease activity [1,2]. We find dermoscopy very helpful in detecting leukotrichia that cannot be seen clini- cally by the naked eye, especially for facial patches. 2 Image Letter | Dermatol Pract Concept. 2022;12(3):e2022114 References 1. Jha AK, Sonthalia S, Lallas A. Dermoscopy as an evolving tool to assess vitiligo activity. J Am Acad Dermatol. 2018;78(5):1017– 1019. DOI: 10.1016/j.jaad.2017.12.009. PMID: 29229577. 2. Kumar Jha A, Sonthalia S, Lallas A, Chaudhary RKP.. Der- moscopy in vitiligo: diagnosis and beyond. Int J Dermatol. 2018;57(1):50–54. DOI: 10.1111/ijd.13795. PMID: 29076154. Figure 1. (A) Facial vitiligo with minimal response to many sessions of excimer laser. (B) Polarized dermoscopy clearly demonstrate multiple white vellus hairs within vitiliginous skin . Leukotrichia was difficult to appreciate with the naked eye.