Analysis of Online Diet Recommendations for Vitiligo.

Internet platforms have become a common source of information for individuals with skin diseases such as vitiligo, and the vitiligo community frequently turns to online sources for diet modifications that may be beneficial for their disease. In this study, our objective was to summarize information from the most frequently visited websites providing diet suggestions that reportedly affected vitiligo symptoms. Notable diet categories for food components included vitamins, fruits, omega-3 fatty acids, grains, minerals, vegetables, and nuts. Evidence supporting online dietary recommendations for vitiligo is limited in the published scientific literature. Further controlled clinical trials are warranted to assess the relationship between diet and vitiligo and evaluate the accuracy of online diet recommendations for vitiligo.

Ocular findings in vitiligo and recommendations for dermatologists.

Since extracutaneous melanocytes in the eye may also be affected in vitiligo, a systematic review was conducted to explore the ocular manifestations of vitiligo. Studies point to a higher risk of ocular findings in periorbital vitiligo. Dry eye disease is the most reported ocular abnormality in vitiligo. Additionally, several small studies have found potential links to uveitis and glaucoma. Various other chorioretinal pigmentary changes are also reported, but without accompanying functional consequences or changes in vision. Although there is a need for larger studies to further elucidate these associations, dermatologists should be aware of potential ocular comorbidities in vitiligo and refer to ophthalmology accordingly.

Defining a Unique Gene Expression Profile in Mature and Developing Keloids.

Keloids are benign, fibroproliferative dermal tumors that typically form owing to abnormal wound healing. The current standard of care is generally ineffective and does not prevent recurrence. To characterize keloid scars and better understand the mechanism of their formation, we performed transcriptomic profiling of keloid biopsies from a total of 25 subjects of diverse racial and ethnic origins, 15 of whom provided a paired nonlesional sample, a longitudinal sample, or both. The transcriptomic signature of nonlesional skin biopsies from subjects with keloids resembled that of control skin at baseline but shifted to closely match that of keloid skin after dermal trauma. Peripheral keloid skin and rebiopsied surrounding normal skin both showed upregulation of epithelial-mesenchymal transition markers, extracellular matrix organization, and collagen genes. These keloid signatures strongly overlapped those from healthy wound healing studies, usually with greater perturbations, reinforcing our understanding of keloids as dysregulated and exuberant wound healing. In addition, 219 genes uniquely regulated in keloids but not in normal injured or uninjured skin were also identified. This study provides insights into mature and developing keloid signatures that can act as a basis for further validation and target identification in the search for transformative keloid treatments.

Consumer attitudes toward aging skin during the COVID-19 pandemic.

The impact of the novel coronavirus disease (COVID-19) pandemic on consumer attitudes toward their skin has not been well characterized. Objective: This study investigated how consumers' attitudes toward their skin changed during the COVID-19 pandemic. Methods: A cross-sectional survey was conducted using REDCap. A total of 1,434 participants were recruited and consented to participate online through ResearchMatch. The survey gathered demographic information and assessed participants' attitudes toward their skin using a Likert scale. An ordered logistic regression analysis was performed. Results: Nearly one-third of participants felt unhappy with their skin. Forty four percent feel less happy about their skin compared with 5 years earlier. The top skin concerns were eye puffiness (86.5%), loose skin (85.1%), uneven tone (84.9%), uneven texture (83.5%), and dry skin (81.4%). Video conferencing (31%), wearing masks (23%), and increased stress (21%) during the COVID-19 pandemic affected how participants felt about their skin. Compared with men, women were 1.6 to 1.8 times (P < .01) more likely to "strongly agree" that all 3 pandemic-related factors-video conferencing, wearing masks, and increased stress-affected how they felt about their skin. Younger age groups were 1.5 to 2.8 times (P < .01) more likely to answer in the top category for all 3 pandemic-related factors compared with the oldest age group. Limitations: Recruitment of participants was limited to English-speaking adults aged 18 years or older who were registered on ResearchMatch, which underrepresents minority populations. Further studies should be conducted to elucidate how the pandemic affected perceptions of skin. Conclusion: Skin aging is a significant concern among adults of all ages. The COVID-19 pandemic has exacerbated skin concerns. Women and young adults are more likely to be affected by the COVID-19 pandemic in their attitudes toward their skin.

Colorism attitudes and use of skin lightening agents in the United States.

Skin lightening (SL) is a practice involving the use of chemicals to lighten the skin that is more common among skin of color (SOC) individuals, particularly women, and can lead to adverse health consequences. Objective: In this study, we examine SL habits, including both general lightening and lightening for the treatment of a skin condition, among SOC individuals in the United States and the role of colorism in motivating these behaviors. Methods: A cross-sectional survey was administered to SOC individuals through ResearchMatch, an online national health registry. Demographics, rates of SL, SL habits, and perceived colorism among SL users and nonusers were collected and analyzed with χ2, Fisher's exact, Analysis of variance (ANOVA), Spearman correlation, and t tests. Results: A total of 455 participants completed the survey. Ninety-seven participants (21.3%) reported using SL agents: 73.2% (71/97) used SL agents for the treatment of a skin condition and 26.8% (26/97) used the products for general SL. Only 22.6% (22/97) of SL users consulted a medical provider before using the products. Forty-four participants (45.4%) were unaware of their SL product ingredients, and 35.1% (34/97) reported using hydroquinone-based products. Composite colorism scores were significantly higher in SL users than nonusers (20.03 vs 18.20; P < .001). Limitations: This study used self-reported racial/ethnic groups to characterize those with SOC rather than assessing actual skin tones of participants, which could have led to variability. Conclusion: SL among SOC individuals is prevalent in the U.S. and poses a health risk, as many SL users are unaware of product ingredients, do not consult a medical provider before use, and have access to potentially unsafe formulations. Dermatologists should address skin tone and pigmentary concerns with their SOC patients.

Managing Facial Hyperpigmentation.

This JAMA Network Insight describes dermatologists' role in managing hyperpigmentation, from counseling on photoprotection to prescribing treatment regimens, for this psychosocially distressing entity.

Melanocyte-keratinocyte cross-talk in vitiligo.

Vitiligo is a common acquired pigmentary disorder that presents as progressive loss of melanocytes from the skin. Epidermal melanocytes and keratinocytes are in close proximity to each other, forming a functional and structural unit where keratinocytes play a pivotal role in supporting melanocyte homeostasis and melanogenesis. This intimate relationship suggests that keratinocytes might contribute to ongoing melanocyte loss and subsequent depigmentation. In fact, keratinocyte dysfunction is a documented phenomenon in vitiligo. Keratinocyte apoptosis can deprive melanocytes from growth factors including stem cell factor (SCF) and other melanogenic stimulating factors which are essential for melanocyte function. Additionally, keratinocytes control the mobility/stability phases of melanocytes via matrix metalloproteinases and basement membrane remodeling. Hence keratinocyte dysfunction may be implicated in detachment of melanocytes from the basement membrane and subsequent loss from the epidermis, also potentially interfering with repigmentation in patients with stable disease. Furthermore, keratinocytes contribute to the autoimmune insult in vitiligo. Keratinocytes express MHC II in perilesional skin and may present melanosomal antigens in the context of MHC class II after the pigmented organelles have been transferred from melanocytes. Moreover, keratinocytes secrete cytokines and chemokines including CXCL-9, CXCL-10, and IL-15 that amplify the inflammatory circuit within vitiligo skin and recruit melanocyte-specific, skin-resident memory T cells. In summary, keratinocytes can influence vitiligo development by a combination of failing to produce survival factors, limiting melanocyte adhesion in lesional skin, presenting melanocyte antigens and enhancing the recruitment of pathogenic T cells.

The need for greater skin of color training: perspectives from communities of color.

More than half of the population will belong to a minority group by the year 2044. Further research needs to be done into the perceptions of those with skin of color regarding their dermatologic care. This study assessed the perceptions and preferences of communities of color regarding the care of their skin and hair. An anonymous, cross-sectional, multiple-choice, online survey was administered from August through October 2021. Participants were recruited using ResearchMatch, a national volunteer health registry supported by the US National Institutes of Health. Eligibility criteria included being 18 years or older, identifying with at least one racial/ethnic group within skin of color, and living in the United States. A total of 547 participants completed the survey, 463 women (84.6%) and 84 men (15.4%) with a mean (standard deviation) age of 44.1 (15.4) years. 301 self-identified as Black (55.0%), 84 Latinx (15.4%), 90 Asian (16.5%), and 72 Multiracial (13.2%). Participants did not feel like dermatologists are trained to treat skin of color (69.5%, n = 380) or ethnic hair (75.1%, n = 411). Participants believed that all dermatologists should have training in skin of color (92.3%, n = 505) and would be more likely to see a dermatologist if they had skin of color training (80.1%, n = 438) as they felt dermatologists who have skin of color training are better equipped to treat their conditions (67.1%, n = 367). Participants were more comfortable receiving treatment at clinics that specialize in skin of color (75.1%, n = 411), but overwhelmingly had never heard of skin of color clinics (94.1%, n = 515). Participants were willing to contribute non-identifiable photos (96.3%, n = 527) and stories about skin and hair diseases (94.1%, n = 515) to create skin of color resources to train dermatologists. Overall, perceptions of communities of color on dermatologic care need to be improved. Greater skin of color training including all races/ethnicities and skin tones is imperative, and greater visibility and resources should also be put into skin of color clinics and formal skin of color research.

Keloid treatments: an evidence-based systematic review of recent advances.

BACKGROUND: Keloids are pathologic scars that pose a significant functional and cosmetic burden. They are challenging to treat, despite the multitude of treatment modalities currently available. OBJECTIVE: The aim of this study was to conduct an evidence-based review of all prospective data regarding keloid treatments published between 2010 and 2020. METHODS: A systematic literature search of PubMed (National Library of Medicine), Embase (Elsevier), and Cochrane Library (Wiley) was performed in November of 2020. Search strategies with the keywords "keloid" and "treatment" were performed by a medical librarian. The search was limited to prospective studies that were peer-reviewed, reported on clinical outcomes of keloid therapies, and were published in the English language between January 1, 2010, and November 24, 2020. RESULTS: A total of 3462 unique citations were identified, of which 108 studies met inclusion criteria. Current literature supports silicone gel or sheeting with corticosteroid injections as first-line therapy for keloids. Adjuvant intralesional 5-fluorouracil (5-FU), bleomycin, or verapamil can be considered, although mixed results have been reported with each. Laser therapy can be used in combination with intralesional corticosteroids or topical steroids with occlusion to improve drug penetration. Excision of keloids with immediate post-excision radiation therapy is an effective option for recalcitrant lesions. Finally, silicone sheeting and pressure therapy have evidence for reducing keloid recurrence. CONCLUSIONS: This review was limited by heterogeneity of subject characteristics and study outcome measures, small sample sizes, and inconsistent study designs. Larger and more robust controlled studies are necessary to further understand the variety of existing and emerging keloid treatments, including corticosteroids, cryotherapy, intralesional injections, lasers, photodynamic therapy, excision and radiation, pressure dressings, and others.

Ocular manifestations of vitiligo: a systematic review.

Vitiligo is a disorder characterized by loss of epidermal melanocytes, resulting in depigmented macules and patches. While the relationship between ocular pathology and vitiligo has been demonstrated in conditions such as Vogt-Koyanagi-Harada and Alezzandrini syndromes, the ocular associations of non-syndromic vitiligo are incompletely understood. We conducted a systematic review to comprehensively describe the structural and functional changes seen in the eyes of patients with vitiligo, to identify patients at heightened risk for ocular disease, and to provide an approach to management of ocular manifestations of vitiligo. Overall, the strongest link between vitiligo and ocular pathology seems to lie with dry eye disease and pigmentary abnormalities of various ocular structures, especially the retinal pigment epithelium. Normal-tension glaucoma may also be more prevalent in the vitiligo population. The available literature did not provide conclusive evidence for increased risk of cataracts or uveitis. Aside from the impact of symptomatic dry eye disease, it seems unlikely that there are significant functional consequences of these ocular manifestations such as impaired visual acuity or visual fields.

The epidemiology of skin cancer by UV index: cross-sectional analysis from the 2019 behavioral risk factor surveillance survey.

The extent to which the Ultraviolet (UV) index is associated with the prevalence of melanoma and keratinocyte cancer in the United States is not clear. We conducted a cross-sectional study using the Center for Disease Control and Prevention's (CDC) 2019 Behavioral Risk Factor Surveillance System (BRFSS) telephone interview survey to investigate the epidemiology of skin cancer in the US including age, household income, education, and marital and employment status. Of non-Hispanic white respondents, 9.6% (N = 29,925) reported a being told of a skin cancer diagnosis. The prevalence of skin cancer was significantly higher in high UV (> / = 8) states (11.8%, N = 36,575) than in medium UV (6-7) (9.0%, N = 27,812) and lower UV (< / = 5) (7.8%, N = 24,083) states (p < .0001). Respondents from a medium UV or high UV state had higher odds (1.21 [1.15-2.27], 1.55[1.47-1.63], respectively) of reporting a skin cancer diagnosis than those from a low UV state. The association of UV index with lifetime skin cancer prevalence reinforces the importance of educating patients on preventive practices such as avoidance of tanning beds and usage of UV protection with clothing and sunscreen.

Cost and quality in consumer sunscreen preferences.

BACKGROUND: Sunscreen use is an important modifiable behavior to protect against skin cancer, photoaging, and sunburn. Product costs and characteristics may influence accessibility and usage of sunscreen. This study aims to determine preferences for sunscreen attributes and willingness to pay (WTP) for an ideal sunscreen product. METHODS: Adult volunteers 18 years or older were contacted on ResearchMatch. Of 670 responses, 489 surveys were completed and 2 were excluded based on the inclusion criterion. Online survey responses were collected in REDCap from July-September 2019. The online survey queried sunscreen attribute preferences and then respondent preferences were compiled into individualized descriptions of ideal products. Respondents were then asked to make purchasing decisions on these products. WTP was determined by analyzing product attributes and purchasing decisions. Attribute preferences were reported as numerical ratings of Importance and Desirability. WTP was calculated by linear regression of purchasing decision data. Qualitative comments about sunscreen preferences were also collected. RESULTS: The study involved 487 participants aged 18-85 years (mean 43.6, SD 15.7) and 84.4% (N = 411) female. The most popular attributes included complete prevention of skin cancer and sunburn. WTP for an ideal product was $30.10 ± 2.11 for one month of use. CONCLUSIONS: Consumers provide high values in WTP for sunscreen. Dermatologists should consider cost and variability in attribute preferences when recommending sunscreens to patients. Further study is required to determine the effects, if any, of cost and attributes on adherence to sunscreen use in specific populations.