Hair loss among a group of Egyptian children

Moneib, Hoda; El-Shiemy, Saleh; Saudi, Wael M.; Elfangary, Mona M.; Nabil, Tarek; Mohy, Sara M.

doi:10.1097/01.ewx.0000489879.88799.28

Cited by 12 publications

(34 citation statements)

References 43 publications

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“…Differences in the reported frequency of this trichoscopic finding may be attributed to skin phototypes (it has been hypothesized that yellow dots are generally less visible in populations with yellowish or dark color of the skin), type of dermoscopy device, as well as different shampooing habits between European, Asian and Latin American cultures . However, the highest prevalence of yellow dots was reported in studies conducted in dark‐skinned patients (phototype V according to Fitzpatrick's scale), ranging 6–100% (mean value, 72%) with a handheld dermoscope and 69–82% (mean value, 77%) with a videodermoscope . On the contrary, yellow dots in white‐skinned patients (phototype I–III according to Fitzpatrick's scale) were observed in 81% with a dermoscope and 13–95% (mean value, 50%) with a videodermoscope .…”

Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 99%

“…However, it is also present in the acute form of alopecia areata . Yellow dots were observed in 6–100% (mean value, 62%) of patients with alopecia areata . Differences in the reported frequency of this trichoscopic finding may be attributed to skin phototypes (it has been hypothesized that yellow dots are generally less visible in populations with yellowish or dark color of the skin), type of dermoscopy device, as well as different shampooing habits between European, Asian and Latin American cultures .…”

Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 99%

“…According to Miteva and Tosti, yellow dots are not present in children because of the underdevelopment of sebaceous glands before puberty. Nevertheless, yellow dots were observed with an incidence rate ranging 40–100% in a number of studies describing trichoscopic findings in alopecia areata in children . Furthermore, a study conducted by Rakowska et al .…”

Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 99%

“…Black dots predominate in acute alopecia areata with active hair loss . The incidence of black dots in alopecia areata ranged 0–84% (mean value, 53%) in patients . It has been hypothesized that this variation results from a difference in hair color and cuticle resistance.…”

Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 99%

“… The ranges from published articles are given for the trichoscopic features for which the frequency was evaluated. ‡ Mean value was calculated by dividing the total number of patients with a particular feature by the total number of patients in studies reporting the frequency of this feature. …”

Section: Introductionmentioning

confidence: 99%

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Trichoscopy of alopecia areata: An update

Waśkiel

Rakowska

Sikora

et al. 2018

The Journal of Dermatology

113

100

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The diagnosis of alopecia areata is usually based on clinical manifestations. However, there are several hair and scalp disorders that share similar clinical features with alopecia areata, such as tinea capitis, trichotillomania or traction alopecia. Trichoscopy as a fast, non-invasive and easy-to-perform technique may help to identify subtle details and establish the correct diagnosis. The aim of this review is to present the spectrum of trichoscopic findings in alopecia areata. A systematic review of the published work was performed by searching the PubMed, Scopus and EBSCO databases, complemented by a thorough hand search of reference lists. Of 427 articles retrieved, 30 studies were eligible for quantitative analysis. The reported features of alopecia areata were: yellow dots (6-100% patients), short vellus hairs (34-100%), black dots (0-84%), broken hairs (0-71%) and exclamation mark hairs (12-71%). Tapered hairs (5-81%) were reported in few studies, but a relatively high frequency of this finding in alopecia areata may indicate their important role in the differential diagnosis of hair loss. Rarely reported features, which include upright regrowing hairs (11-96%), pigtail (circle) hairs (4-61%) and Pohl-Pinkus constrictions (2-10%), may also be helpful in the diagnosis of alopecia areata. There is no pathognomonic trichoscopic marker for alopecia areata and the most common trichoscopic features are not the most specific. Therefore, the diagnosis should be based on the coexistence of several trichoscopic findings, not on the presence of a single feature.

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Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 99%

Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 99%

Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 99%

Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Trichoscopy of alopecia areata: An update

Waśkiel

Rakowska

Sikora

et al. 2018

The Journal of Dermatology

113

100

View full text Add to dashboard Cite

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Trichoscopy of Tinea Capitis: A Systematic Review

Waśkiel‐Burnat

Rakowska

Sikora

et al. 2020

Dermatol Ther (Heidelb)

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Introduction: An increased incidence of tinea capitis has been observed over the last few decades. Trichoscopy is a non-invasive, in-office method helpful in establishing the correct diagnosis in patients with hair loss and inflammatory hair disorders. The objective was to review and analyze current data on the trichoscopy of tinea capitis. Methods: A systematic review of the literature was conducted using the PubMed, EBSCO and Scopus databases. The search terms included 'tinea capitis' combined with 'trichoscopy', 'dermatoscopy', 'dermoscopy', 'videodermatoscopy' or 'videodermoscopy'. Results: Of 326 articles, 37 were considered eligible for the quantitative analysis. The most characteristic (with a high predictive value) trichoscopic findings of tinea capitis included comma hairs (51%), corkscrew hairs (32%), Morse code-like hairs (22%), zigzag hairs (21%), bent hairs (27%), block hairs (10%) and i-hairs (10%). Other common, but not characteristic, trichoscopic features were broken hairs (57%), black dots (34%), perifollicular scaling (59%) and diffuse scaling (89%). Morse code-like hairs, zigzag hairs, bent hairs and diffuse scaling were only observed in Microsporum tinea capitis (8/ 29, 28%; 6/29, 21%; 4/29, 14% and 4/29, 14%, respectively). In Trichophyton tinea capitis, corkscrew hairs were more commonly detected compared to Microsporum tinea capitis (21/38, 55% vs 3/29, 10%). Conclusion: The presence of characteristic trichoscopic features of tinea capitis is sufficient to establish the initial diagnosis and introduce treatment before culture results are available. Trichoscopy may be useful in distinguishing between Microsporum and Trichophyton tinea capitis.

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