Yellow dots in trichoscopy: relevance, clinical significance and peculiarities

Lima, Caren dos Santos; Lemes, Luciana Rodino; Melo, Daniel Fernandes

doi:10.1590/abd1806-4841.20176157

Cited by 19 publications

(20 citation statements)

References 8 publications

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“…We suggest this disparity also could be due to the disease duration, as yellow dots represent follicular Ostia (atrichia) due to sebaceous gland persistence after severe miniaturization of the follicles or sebaceous gland hyperplasia under the influence of androgens, which indicate chronicity, and this was confirmed in our study as all patients having yellow dots were of long disease duration >6 months. This was confirmed also by earlier study by Lima et al, who suggested that yellow dots are seen in more advanced stages of the disease with sebaceous component predominance over keratotic elements, differing from the other dermatosis, in which keratinocytic materials are predominant.…”

Section: Discussionsupporting

confidence: 91%

Trichoscopic evaluation of frontal hairline recession in Egyptian female patients

Said

El-Sayed

Elkhouly

2020

J of Cosmetic Dermatology

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Background Since frontal hairline is the most characteristic feature of the face for both men and women, affecting the psychological state of patients, hair loss has been considered to be one of the most prominent esthetic problems. Hair loss either resulting from the androgenetic or nonandrogenetic origin is characterized by changes in the anterior line. Aim The aim of this study was to evaluate the causes of the frontal hairline recession in Egyptian female patients using trichoscopy and to detect the prevalence of each of those causes in Egyptian females. Patients and Methods This study was performed on a total of 200 Egyptian female patients aged between 15 and 65 years who complained of frontal hairline recession. All patients were derived from Al‐Zahraa University hospital outpatient clinic over a period from November 2017 to April 2019. We classified them into two groups according to age: Group A: 15‐45 and Group B: 46‐65. After full history taking, general and dermatological examination, photographs of hair recession were taken from both frontal and temporal sides. Then, the trichoscopic examination by noncontact dermoscopy was done photographed and evaluated. Results The most common cause of the frontal hairline recession in Egyptian female patients was androgenetic alopecia (AGA) (50%). Most of the patients were of old age (58%). The high statistically significant trichoscopic findings in androgenetic alopecia were yellow dots, peripilar sign, hair diameter diversity, and single‐hair pilosebaceous unit (45.0%, 61.0%, 100.0%, and 96.0%), respectively. On the other hand, perifollicular scaling, absence of hair follicles, and lonely hair revealed a high statistically significant presentation (88.9%, 100.0%, and 22.2%), respectively, with frontal fibrosing alopecia, and vellus hair (100.0%) and perifollicular casts (91.8%) with tractional alopecia. Finally, hair broken at different levels (100%), black powder (88.9%), black dots (100.0%), hook hairs (11.1%), i hair (16.7%),V sign (44.4%), flame hairs (33.3%), coiled hair (5.6%), and burnt match stick sign (5.6%) showed a high statistically significance presentation with trichotillomania. Conclusion The present study supports the trichoscopic criteria for the diagnosis of causes of frontal hairline recession, which provide a noninvasive diagnostic tool compared with histopathological diagnosis.

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Section: Discussionsupporting

confidence: 91%

Trichoscopic evaluation of frontal hairline recession in Egyptian female patients

Said

El-Sayed

Elkhouly

2020

J of Cosmetic Dermatology

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“…Regarding scalp severity, S2 grade of severity represented 45% of the patients, followed by Grade S1 in 31% of patients, these findings are also documented in other studies 12,13 . There are several dermoscopic signs of alopecia areata including YDs, BDs, SVHs, EHs, and BHs (8,9,14). YDs were the commonest dermatoscopic sign noticed in this work.…”

Section: Discussionmentioning

confidence: 52%

Dermatoscopic evaluation of alopecia areata

Chalabi¹,

harbawi²,

Salman³

2021

Ann Coll Med Mosul

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“…They are observed as rounded or polycyclic structures with colors ranging from pinkish to brownish yellow. 4 This finding has been detected in various diseases, such as alopecia areata, chronic cutaneous lupus erythematosus, androgenetic alopecia, and dissecting cellulitis and, less frequently, in trichotillomania. 5 Therefore, the brownish yellow dots identified in the present case are not specific to follicular mucinosis.…”

Section: Discussionmentioning

confidence: 91%