Applicability of trichoscopy in scalp seborrheic dermatitis

Abstract

Introduction: Seborrheic dermatitis (SD) is a chronic-recidive inflammatory skin disorder with predilection in areas rich of sebaceous gland. The most common clinical manifestations are pruritus and scales. Although SD can be diagnosed without special tools, other examinations may be needed to determine additional specific therapy. Trichoscopy is one of the noninvasive tools which can help to diagnose SD as it can provide the microstructure view of the scalp. Materials and Methods: This descriptive study was conducted to explore the trichoscopic features of SD and its characteristics. There were 96 SD patients enrolled in this study. The scalp was divided into four areas, and each area was scored based on Seborrheic Area Severity Index, comprising erythema, desquamation, number of papules, and percentage of lesion area. The most severe area was examined with a trichoscopy to observe the characteristics of hair and scalp. The association between trichoscopic findings and SD severity was analyzed with Fisher's exact test. Results: Overall, the participants were 36% males and 64% females with the mean age of 30 (13–70) years old. Based on the trichoscopic examination, the most common findings were thick hair shafts (72%), white scales (69%), arborizing thin vessels (38%), yellowish area (36%), and structureless red area (19%). These findings were not significantly different between mild and moderate SD ( P > 0.05). Conclusion: Considering the merits and demerits of trichoscopic examination, it can be helpful to aid the diagnosis of SD. Further studies in Asian population with greater sample size are needed to demonstrate more significant result.

Trichoscopy in common scalp alopecia: an observational study

“…These findings were consistent with those by Widaty et al in which the most common finding was thin arborizing vessels (40%) followed by yellow scales and white scales. 23 In the present study, out of 12 cases of scarring alopecia 8 cases had LPP. On trichoscopy all (100%) the cases had yellow dots, white structure less areas, loss of ostia, peritubular casts and scales.…”

A Comprehensive Review on Trichogram and Trichoscopy in Dermatology

“…It is a practical diagnostic, evaluative and prognostic tool in awidevariety of hair disorders as hair shaft abnormalities, genodermatotic with hair involvement, immune mediated (Tcell mediated or auto-antibody induced) inflammatory cicatricial or non-cicatricial hair disorder or alopecia, non immune mediated hair or scalp disorders like androgenic alopecia, sebborheic dermatitis, trichotillomania, traction alopecia, psoriasis, pseudonits, casts, infectious disorders like tinea capitis or tinea of hair bearing area, pediculosis and even neoplastic disorder. [32][33][34][35][36][37][38][39][40][41][42][43][44][45]Trichoscopyis especially a very useful non-invasive evaluation for children with hair disorders. [43,46]There are also many promising technical improvements in this regard.…”

Usefulness of high-frequency ultrasonography in the assessment of alopecia areata – comparison of ultrasound images with trichoscopic images

“…The trichoscopic patterns of healthy volunteers, patients with AA, SebD, and AGA differed from each other; moreover, the AA images differed depending on the phase of the disease. The characteristic trichoscopic structures have been accurately and repeatedly presented in the available literature [ 16 , 25 – 27 ]. The images we obtained corresponded with those described in the literature.…”