Skin Appendage Disorders最新文献

Background: Smoking cigarettes can have deleterious effects on hidradenitis suppurativa (HS) disease severity, but little is known about the relationship between vaping electronic nicotine delivery systems (ENDS) and HS severity.

Objectives: The aim of this study was to determine the rate of ENDS use in those with HS and the perceptions of HS participants and dermatologists on the relationship between vaping and HS.

Methods: Two separate cross-sectional, anonymous, multiple-choice questionnaires were administered. One questionnaire was distributed to those with HS recruited via online HS-related forums. Inclusion criteria were diagnosis of HS, age 18 and over, and residence in USA. The other questionnaire was distributed to currently practicing, board-certified dermatologists recruited via an email listserv.

Results: Overall, 302 participants with HS completed the questionnaire. Fifty-six participants (18.5%) smoke cigarettes and 41 participants (13.6%) vape ENDS. One-third of ENDS users (14/41) switched from cigarettes to ENDS after learning of their HS diagnosis, of which 78.6% (11/14) believed that the switch decreased the severity and/or frequency of their HS flares. Fifty dermatologists completed the questionnaire, of whom over half (54%, 27/50) were unsure about the relationship between vaping and HS severity.

Conclusions: As cigarette smoking and HS are closely linked, the use of ENDS in HS warrants further study.

Introduction: Onychomatricoma is a fibroepithelial tumor derived from the nail matrix and onychodermis. Many clinical and histological variants have been described. Pigmented onychomatricoma is a rare variant which presents as longitudinal pachymelanonychia.

Case presentation: We report the details of a 41-year-old female who presented with blackening and thickening involving more than half of the left middle fingernail for the past 10 years. Dorsal plate onychoscopy revealed longitudinal parallel white, gray, and black bands, while onychoscopy of the distal free edge demonstrated a thickened nail plate with "wood worm" cavities. The histopathological examination of the excised tumor revealed a pigmented onychomatricoma.

Conclusions: Onychomatricoma is one of the nail tumors presenting as pachyonychia striata apart from onychocytic matricoma and onychocytic carcinoma. A pigmented onychomatricoma may closely mimic fungal melanonychia, pigmented onychopapilloma, pigmented ungual Bowen's disease, and ungual melanoma. Noninvasive techniques like onychoscopy and imaging studies like ultrasonography and magnetic resonance imaging are helpful in differentiating it from pigmented ungual Bowen's disease and ungual melanoma, even though diagnostic confirmation requires an excisional biopsy.

Background: Trichoscopy can be very useful for evaluation for hair transplantation (HT), helping rule out simulators of androgenetic alopecia (AGA). There are only a few reports about normal trichoscopic findings after HT.

Objective: The aim of this study was to evaluate donor and recipient area trichoscopy after FUE in HT without complications in AGA patients.

Method: A prospective study was carried out with 10 patients, for 24 weeks, with photographic follow-up, using FotoFinder^®. Patients were evaluated from week 1 (w1) to week 8 weekly, then, at week 12 and week 24 post-HT.

Results: Main results were perifollicular crusts, donor area erythema, recipient area erythema, perifollicular erythema, white circles, perifollicular whitish halos, repilation black dots, dystrophic hairs, folliculitis, yellow dots. We discussed the meaning of each of these findings in the period in which they occurred.

Conclusion: Normal trichoscopic findings in post-transplant patients have not been well established yet. Our findings are an attempt to define a normal pattern. Future studies with a longer follow-up may be necessary to corroborate these results.

Introduction: Chemotherapy-induced alopecia (CIA) can seriously affect the quality of life of cancer patients. Trichoscopic patterns and confocal microscopy (RCM) features of CIA have been scarcely studied. This study aimed to investigate the dermoscopic and RCM features of CIA in 19 females and 5 males, with CIA due to current or recent chemotherapy.

Methods: Patients with CIA and current or recent (within 2 months) history of chemotherapy treatment were enrolled. After clinical examination, standard pictures were taken by digital camera (SLR Canon PowerShot G10) and trichoscopic images were captured by the Handyscope device (20x). Images of RCM were acquired by VivaScope 3000 with the VivaStack option. The trichoscopic and confocal images were acquired by three independent observers after central parting on three areas: vertex, middle, and frontal scalp.

Results: A total of 24 patients were enrolled. CIA has features of anagen effluvium at trichoscopy but with low frequency of yellow dots and prominence of black dots. The simultaneous presence of pseudo-monilethrix and black dots at trichoscopy confirms the hypothesis that chemotherapy insults the hair follicle intermittently. At RCM, the presence of abnormal hair shaft morphology highlights that the insults affect hair shaft production.

Conclusion: These are the first data in this field, so further studies with a higher number of patients analyzed are needed to confirm these findings.

Introduction: Onychomycosis represents half of nail disorders seen in clinical practice. Despite its high prevalence, a bibliometric analysis has not been performed. We aimed to identify the top 100 highly cited onychomycosis publications over the last 50 years to better understand research trends.

Methods: SCOPUS was searched for onychomycosis publications, using "onychomycosis" and "nail fungus" 1/1/1972-12/31/22 on 3/25/23. Top 100 highly cited publications were recorded and ranked by total citation count.

Results: Total citation count was 13,456, with the top 10 articles with highest citation count/year having average 28.7 citations/year. Most articles were published in high IF journals. From 1982 to 2011 (no treatment articles - 1972-1981), there was an 8.6% increase in articles discussing treatment. Overall, 42% of first authors were female.

Conclusion: We found an overall increase in articles discussing onychomycosis therapies over time, with the majority published in high IF journals. We also found a relatively greater percentage of female first authors compared to studies on other dermatologic topics. While total citation count remains a widely used metric of impact in bibliometric studies, average citation count/year may be a better measure of impact and should be considered in future studies.