Diagnostic Accuracy of Trichoscopy in Trichotillomania: A Systematic Review

This study found that androgenetic alopecia was the most common cause of frontal hairline recession in Egyptian female patients, supporting the use of trichoscopy as a noninvasive diagnostic tool.

This study identified several specific trichoscopic features of trichotillomania, with trichoptilosis, V hair, and hair powder being the most frequent findings.

This article reviews various hair abnormalities observable through trichoscopy in conditions like monilethrix, trichorrhexis nodosa, and ectodermal dysplasias, with no new clinical findings reported.

This study describes a distinct pattern of trichoscopic features associated with chemotherapy-induced alopecia and how these features evolve through different phases of chemotherapy treatment.

This review presents various trichoscopic findings for diagnosing alopecia areata but reports no new clinical results, emphasizing that no single marker is pathognomonic and multiple features should be considered together.

This review highlights the occurrence of yellow dots, a trichoscopic finding, in several scalp conditions beyond alopecia areata and reports no new clinical results.

This case report described a 12-year-old girl initially misdiagnosed with alopecia areata who showed improvement in trichotillomania symptoms after treatment with psychotropic drugs and N-acetylcysteine, highlighting the need for more research to develop standardized treatment guidelines for this chronic condition.

This study found that trichoscopic features like exclamation mark hairs and angulated hairs were more indicative of alopecia areata in an Asian population, while features like broken hairs of different lengths and flame hairs were more common in trichotillomania.

This article discusses the use of dermoscopy for diagnosing hair and scalp disorders in children and reports no new clinical results.

In this study, trichoscopic features aiding differential diagnosis of alopecia in Korean patients were found to be similar to those in Caucasians, but pigment pattern frequencies differed due to racial characteristics.

This study reported that polarized dermoscopy was better for visualizing vascular patterns, scaling, and reticular pigmentation, while nonpolarized mode better documented features like black dots and tapered hair in various hair and scalp conditions.

This study found that dermoscopy showed distinctive patterns for different types of alopecia, supporting its clinical usefulness for diagnosing diseases with small round or oval hairless patches on the scalp.

This report describes an 8-year-old male with trichotillomania, confirmed by trichoscopy showing characteristic hair damage and patterns.

This study found that 'black dots' seen under trichoscopy are not specific to alopecia areata and may occur in various other hair and scalp conditions.

This study found that dermoscopy-guided scalp biopsies provided a definitive pathological diagnosis in 95% of patients with cicatricial alopecia.

This review discusses the dermoscopic features of common hair and scalp disorders and reports no new clinical results, aiming to assist dermatologists in diagnosing conditions like tinea capitis and alopecia areata.

This review discusses the application of trichoscopy in diagnosing various hair and scalp diseases and reports no new clinical results; the authors emphasize its role as a non-invasive diagnostic tool.

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This study found that dermoscopic indicators like black dots and tapering hairs are valuable markers for diagnosing and assessing the severity and activity of alopecia areata in Asian patients.