Lessons from a scoping review: Clinical presentations of central centrifugal cicatricial alopecia.

BACKGROUND: Central centrifugal cicatricial alopecia (CCCA) nomenclature describes a typical clinical presentation of cicatricial hair loss that begins on the vertex scalp with progressive, symmetric, and centrifugal evolution. However, atypical presentations have been noted clinically by the authors and reported in the literature. OBJECTIVE: We sought to characterize the distribution of hair loss in published cases of adult patients with CCCA. METHODS: A 3-step search process was used to evaluate research articles in Cumulative Index to Nursing & Allied Health, EMBASE, Google Scholar, MEDLINE, Scopus, and Web of Science databases. Studies with scalp photography or description of hair loss distribution were included. Three researchers evaluated eligible studies for clinical subtypes. Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Review was used to report results. RESULTS: Ninety-nine studies consisting of 281 cases of CCCA were included. Hair loss distributions included variants of the classic presentation along with distinct subtypes such as patchy, occipital, parietal, frontal, temporal, and trichorrhexis. LIMITATIONS: Studies had significant homogeneity, as the classic distribution of CCCA was commonly reported. Additionally, clinically diagnosed cases may have concurrent diagnoses, and numerous studies did not report trichoscopy findings. CONCLUSION: CCCA terminology may not always be reflective of clinical presentation. Understanding atypical presentations is essential to inform appropriate and targeted treatment.

Treatment for central centrifugal cicatricial alopecia-Delphi consensus recommendations.

BACKGROUND: There is no established standard of care for treating central centrifugal cicatricial alopecia (CCCA), and treatment approaches vary widely. OBJECTIVE: To develop consensus statements regarding the use of various pharmacological therapies in treating adults with CCCA. METHODS: We invited 27 dermatologists with expertise in hair and scalp disorders to participate in a 3-round modified Delphi study between January and March 2023. Statements met strong consensus if 75% of respondents agreed or disagreed. Statements met moderate consensus if 55% or more but less than 75% agreed or disagreed. RESULTS: In round 1, 5 of 33 (15.2%) statements met strong consensus, followed by 9 of 28 (32.1%) in round 2. After the final round 3 meeting, strong consensus was reached for 20 of 70 (28.6%) overall statements. Two statements achieved moderate consensus. LIMITATIONS: This study included only English-speaking, US-based dermatologists and did not consider nonpharmacological therapies. CONCLUSION: Despite varying opinions among dermatologists, consensus was reached for several statements to help clinicians manage CCCA. We also highlight areas that lack expert consensus with the goal of advancing research and therapeutic options for CCCA.

Skin-Lightening Product Use Among South Asian Americans: Cross-Sectional Survey Study.

BACKGROUND: Despite their potential for adverse health effects, skin-lightening products remain popular among South Asian Americans. OBJECTIVE: This study investigates attitudes toward skin tone and the prevalence and adverse effects of skin-lightening product use among South Asian Americans. METHODS: We conducted a cross-sectional study, recruiting and surveying 175 women or nonbinary individuals meeting the following inclusion criteria: (1) lived in the United States, (2) identified as South Asian, and (3) were raised by parents born in South Asian countries. RESULTS: Of the 175 participants, 55 (31%) respondents used a skin-lightening product before. Parental pressure to use skin-lightening products and decreased time spent in the United States were significantly associated with skin-lightening product use (odds ratio [OR] 8.51, 95% CI 3.33-21.78, P<.001, and OR 0.70, 95% CI 0.52-0.96, P=.03, respectively). Although only 6 of the 55 (11%) users reported being aware of the potential side effects of skin-lightening products, 33 (60%) reported adverse effects, with acne, skin sensitivity, and dry skin being the most common. Users and nonusers equally endorsed statements associating lighter skin with increased attractiveness (P=.31), marriageability (P=.94), social status (P=.98), self-esteem (P=.73), and respect received from others (P=.74). CONCLUSIONS: The use of skin-lightening products among South Asian Americans is common and linked to social and psychological factors. Parental pressure and cultural beauty standards may play a significant role in perpetuating this practice. This study highlights the need for educational campaigns about the potential health risks associated with skin-lightening and increased efforts to challenge harmful beauty standards.

Central centrifugal cicatricial alopecia in males.

BACKGROUND: Central centrifugal cicatricial alopecia (CCCA) is a scarring alopecia seen primarily in women of African descent but rarely reported in men. The etiology of CCCA is unknown, but genetic variants, type 2 diabetes mellitus, and bacterial infections may play a role. OBJECTIVES: We aimed to characterize the demographics, medical histories, and clinical findings of male patients with CCCA with the hypothesis that features may differ from women. METHODS: This was a case series of adult male patients with biopsy-confirmed CCCA seen at an academic dermatology department between 2012 and 2022. RESULTS: In total, 17 males had a scalp biopsy and clinical findings consistent with CCCA. The average age was 43 years, and 88.2% of cases identified as Black race. Scalp pruritus was the most common symptom, and few patients endorsed high-risk hair care practices. None of the cases had diagnosis of type 2 diabetes mellitus, but 17.6% had history of latent tuberculosis, and 47.1% had a positive family history of alopecia. We observed 8 patients with atypical CCCA, and 29.4% had an overlapping scalp diagnosis. LIMITATIONS: This study is limited by the single center, retrospective design and small sample size. CONCLUSIONS: It is important to consider CCCA in the differential diagnosis of alopecia in adult Black males.

Unconscious Bias.

Unconscious biases (also known as implicit biases) are involuntary stereotypes or attitudes held about certain groups of people that may influence our behaviors, understandings, and actions, often with unintended detrimental consequences. Implicit bias appears in multiple facets of medical education, training, and promotion with negative effects on diversity and equity efforts. Notable health disparities exist among minority groups in the United States, which may partly be attributable to unconscious biases. Although there is little evidence supporting the effectiveness of current bias/diversity training programming, standardization and blinding may be helpful, evidence-based methods to reduce implicit bias.

Automating Hair Loss Labels for Universally Scoring Alopecia From Images: Rethinking Alopecia Scores.

Importance: Clinical estimation of hair density has an important role in assessing and tracking the severity and progression of alopecia, yet to the authors' knowledge, no automation currently exists for this process. While some algorithms have been developed to assess alopecia presence on a binary level, their scope has been limited by focusing on a re-creation of the Severity of Alopecia Tool (SALT) score for alopecia areata (AA). Yet hair density loss is common to all alopecia forms, and an evaluation of that loss is used in established scoring systems for androgenetic alopecia (AGA), central centrifugal cicatricial alopecia (CCCA), and many more. Objective: To develop and validate a new model, HairComb, to automatically compute the percentage hair loss from images regardless of alopecia subtype. Design, Setting, and Participants: In this research study to create a new algorithmic quantification system for all hair loss, computational imaging analysis and algorithm design using retrospective image data collection were performed. This was a multicenter study, where images were collected at the Children's Hospital of Philadelphia, University of Pennsylvania (Penn), and via a Penn Dermatology web interface. Images were collected from 2015 to 2021, and they were analyzed from 2019 to 2021. Main Outcomes and Measures: Scoring systems correlation analysis was measured by linear and logarithmic regressions. Algorithm performance was evaluated using image segmentation accuracy, density probability regression error, and average percentage hair loss error for labeled images, and Pearson correlation for manual scores. Results: There were 404 participants aged 2 years and older that were used for designing and validating HairComb. Scoring systems correlation analysis was performed for 250 participants (70.4% female; mean age, 35.3 years): 75 AGA, 66 AA, 50 CCCA, 27 other alopecia diagnoses (frontal fibrosing alopecia, lichen planopilaris, telogen effluvium, etc), and 32 unaffected scalps without alopecia. Scoring systems showed strong correlations with underlying percentage hair loss, with coefficient of determination R2 values of 0.793 and 0.804 with respect to log of percentage hair loss. Using HairComb, 92% accuracy, 5% regression error, 7% hair loss difference, and predicted scores with errors comparable to annotators were achieved. Conclusions and Relevance: In this research study,it is shown that an algorithm quantitating percentage hair loss may be applied to all forms of alopecia. A generalizable automated assessment of hair loss would provide a way to standardize measurements of hair loss across a range of conditions.

Minority hair tax: pricing bias in haircare products.

Background: Black haircare is an estimated $2.51-billion-dollar industry. Black women spend 9 times more on ethnic hair products than non-Black consumers. The haircare industry has adapted to these market trends by developing products catering to the needs of "natural hair," referring to curly to tightly coiled hair texture that has not been chemically straightened with a relaxer. Anecdotally, natural haircare products are relatively expensive. Objective: We aimed to investigate texture-based price differences for haircare products targeting coily/curly compared to straight hair types. Methods: Data were collected in August 2022 from 6 brands available on www.amazon.com. After stratifying the data by manufacturer, hair texture, and average price/oz, we used 2 sample t-test with equal variances to examine cost differences. Results: Overall, there was a significant difference in average price/oz between all coily/curly and straight hair products, with coily/curly hair products being more expensive. When stratified by manufacturer, one leading US manufacturer sold coily/curly hair products at a higher price ($0.66/oz ±$0.05) compared with straight hair products ($0.46/oz ±$0.04), t14 = 2.8967, P < 0.0134. Limitations: A small sample size of only shampoos and conditioners were analyzed, which may not represent the number of haircare products that consumers use. Conclusion: Pricing policies should ensure that all individuals have access to effective, affordable haircare products. Dermatologists should also be cognizant of pricing differences to direct patients with natural hair to fairly priced products.

Skin Tone Representation in Dermatology Textbooks: Approximating the Gap.

Dermatology heavily relies on photographs in its literature to depict diseases and demonstrate treatment modalities. Previous studies have established that general medical and dermatology textbooks have limited photographic representation of individuals with skin of color (SOC), even those diseases highly prevalent in these populations. As the US population continues to grow and diversify, there is an increase in individuals with SOC seeking cosmetic and procedural services. We set out to investigate the current trends of SOC representation in the surgical and cosmetic sections of current dermatology textbooks.

A Systematic Review on the Treatment of Dermatosis Papulosa Nigra.

Dermatosis papulosa nigra (DPN) is a benign skin condition that is primarily reported in skin of color patients. While prevalent, treatment options are limited and the benign course of DPNs may cause them to be overlooked by clinicians. However, large and multiple lesions in cosmetically sensitive areas may be emotionally and socially distressful to patients. There are few literature reviews examining treatment options for this condition. A literature search was performed using PubMed, Medline, Embase, and Web of Science databases. 67 articles were identified and 15 studies met the inclusion criteria. Our findings demonstrate that laser therapy is becoming increasingly utilized as a safe and efficacious treatment for DPNs in skin of color patients. J Drugs Dermatol. 20(4):467-472. doi:10.36849/JDD.2021.5555.

Nail Unit Schwannoma: An Important Consideration in the Differential Diagnosis of Soft Tissue Tumors Affecting the Nail Apparatus.

Schwannoma is a tumor of schwann cell proliferation which presents as a solitary, soft, skin-colored dermal or subcutaneous papulo-nodule most commonly on the flexor part of extremities and head and neck areas. Here, we report a case of nail unit schwannoma, which is a rare tumor of the nail apparatus with only 4 other prior reports in the literature. This case illustrates the importance of including subungual schwannoma in the clinical differential diagnosis of subungual soft tissue tumors. We include a literature review which catalogs and summarizes the current knowledge regarding this unusual nail unit neoplasm.

Photographing Alopecia: How Many Pixels Are Needed for Clinical Evaluation?

Determining the minimum image resolution needed for clinical assessment is crucial for computational efficiency, image standardization, and storage needs alleviation. In this paper, we explore the image resolution requirements for the assessment of alopecia by analyzing how clinicians detect the presence of characteristics needed to quantify the disorder in the clinic. By setting the image resolution as a function of width of the patient's head, we mimicked experiments conducted in the computer vision field to understand human perception in the context of scene recognition and object detection and asked 6 clinicians to identify the regions of interest on a set of retrospectively collected de-identified images at different resolutions. The experts were able to detect the presence of alopecia at very low resolutions, while significantly higher resolution was required to identify the presence of vellus-like hair. Furthermore, the accuracy with which alopecia was detected as a function of resolution followed the same trend as the one obtained when we classified normal versus abnormal hair density using a standard neural network architecture, hinting that the resolution needed by an expert human observer may also provide an upper bound for future image processing algorithms.

Skin-lightening practices among shoppers in select markets in Kumasi, Ghana: A cross-sectional survey.

BACKGROUND: Despite warnings about its harmful adverse effects and the implementation of regulatory bans, anecdotal reports suggest high use of skin-lightening agents in Kumasi, Ghana. OBJECTIVE: To estimate the prevalence and motivation for skin-lightening agent use and nonuse among shoppers in Kumasi, Ghana. METHODS: This is a cross-sectional survey of a convenience sample of shoppers in 3 of Kumasi's largest markets. RESULTS: Of the 350 shoppers who were approached, 334 consented, for a response rate of 95%. Data were analyzed on 331 completed surveys. A total of 40.4% of individuals reported current or past use of skin-lightening products, and 26.6% of men reported history of product use compared with 56.5% of women. Female sex was significantly associated with skin-lightening product use (odds ratio 3.59; 95% confidence interval 2.26-5.70). Users of skin-lightening agents were more likely to agree with statements that associated lighter skin with beauty, self-esteem, attractiveness, and wealth. LIMITATIONS: Using a nonrandomized convenience sampling method on a single city limits the generalizability of the results. Response, recall, and social desirability biases may have skewed the results, especially given the stigma associated with skin-lightening agent use. CONCLUSION: The practice of skin lightening among all participants is high and is associated with perceptions of increased beauty, attractiveness, self-esteem, and wealth.