Trichoscopic clues for diagnosis of alopecia areata and trichotillomania in Asians

Khunkhet, Saranya; Vachiramon, Vasanop; Suchonwanit, Poonkiat

doi:10.1111/ijd.13453

Cited by 47 publications

(116 citation statements)

References 15 publications

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“…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 . The proportion of yellow dots in yellowish‐skinned (phototype IV according to Fitzpatrick's scale) patients varied 40–65% (mean value, 60%) with a dermoscope . In a study performed by Nikam et al ., yellow dots were more visible in polarized (non‐contact) dermoscopy compared with non‐polarized (contact) dermoscopy.…”

Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 94%

“…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%

“…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: 94%

Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 99%

Section: Trichoscopic Findings In Alopecia Areatamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 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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“…Black dots, coiled hairs, shafts of various lengths, broom fibers, and V-sign (trichoptilosis) are suggestive of TTM. On the other hand, exclamation point hairs, which are suggestive of alopecia areata, are commonly absent in TTM [14,15,16]. Follicular microhemorrhages are a unique dermoscopic sign for the detection of coexisting TTM in cases of alopecia areata [11] and can be extremely useful in doubtful cases.…”

Section: Discussionmentioning

confidence: 99%

The Dermoscopic “Pluck Out Sign” for Beard Trichotillomania

Cutrone

Grimalt

2017

Skin Appendage Disord

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Beard trichotillomania (TTM) is a rather uncommon entity. Hair is not easily plucked from the beard area, as patients need forceps or tweezers to perform their task. The diagnosis of beard TTM can be quite tricky as the location is not the most frequent one. Dermoscopy might in these cases be helpful to achieve the correct diagnosis. In this article, we describe for the first time the “pluck out sign” for beard TTM.

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