Updates on trichoscopy in diagnosing scalp disorders: A systematic review of diagnostic accuracy, sensitivity and specificity (2025)

Type of publication:

Conference abstract

Author(s):

*Mehra S.

Citation:

British Journal of Dermatology. Conference: 105th Annual Meeting of the British Association of Dermatologists, BAD 2025. Glasgow United Kingdom. 193(Supplement 1) (pp i54), 2025. Date of Publication: 01 Jul 2025.

Abstract:

Trichoscopy has emerged as a pivotal diagnostic tool for evaluating scalp disorders. This systematic review assesses its diagnostic sensitivity, specificity and accuracy for various scalp conditions, proposing refinements to clinical protocols based on National Institute for Health and Care Excellence (NICE) and British Association of Dermatologists (BAD) guidelines. The aim is to provide recommendations for integrating trichoscopy into routine dermatology practice to optimize patient outcomes and diagnostic pathways. A systematic review was conducted following the PRISMA guidelines. The PubMed, MEDLINE and Embase databases were searched for studies published between 2010 and 2023. Keywords included 'trichoscopy', 'scalp disorders', 'diagnostic accuracy', 'sensitivity' and 'specificity'. Inclusion criteria encompassed studies evaluating the diagnostic performance of trichoscopy for common scalp conditions such as alopecia areata, androgenetic alopecia, telogen effluvium, scalp psoriasis, seborrhoeic dermatitis and tinea capitis. Only multicentre or single-centre studies with quantitative data were included. Exclusions included case reports and studies lacking statistical metrics. Data were analysed within the framework of the BAD and NICE recommendations to assess real-world applicability. Thirty-six studies involving 11 250 patients were included. Trichoscopy consistently demonstrated high diagnostic accuracy, surpassing traditional methods. (i) In alopecia areata, exclamation-mark hairs and black dots yielded 94% sensitivity and 92% specificity, aligning with BAD recommendations. (ii) In androgenetic alopecia, hair shaft diameter variability and perifollicular pigmentation showed 91% sensitivity and 89% specificity, supporting diagnostic integration. (iii) In telogen effluvium, empty follicles and short regrowth hairs demonstrated 86% sensitivity and 84% specificity, enabling earlier interventions. (iv) In tinea capitis, comma hairs and corkscrew hairs achieved 95% diagnostic accuracy, emphasizing the superiority of trichoscopy. (v) In scalp psoriasis and seborrhoeic dermatitis, differentiation was achieved using red dots, diffuse white scales and arborizing vessels, with 92% sensitivity. Reproducibility across centres was evident. Artificial intelligence (AI)-based algorithms were highlighted for enhancing diagnostic standardization, clinician training and accessibility. A national registry of trichoscopic images is proposed to improve data sharing and compliance with guidelines. In conclusion, trichoscopy is indispensable for diagnosing scalp disorders, offering a noninvasive, accurate alternative to biopsies. It enables earlier diagnosis, precise differentiation and improved outcomes, aligning with NICE and BAD guidelines. The results support the following recommendations. (i) Develop standardized trichoscopic criteria for scalp disorders. (ii) Include trichoscopic education in dermatology training. (iii) Invest in AI-based tools for image standardization. (iv) Establish a national trichoscopy registry for collaborative research. For application to clinical practice, this review provides actionable insights for enhancing diagnostic pathways and advancing the role in dermatology in trichoscopy, offering a foundation for improved patient care.

DOI: 10.1093/bjd/ljaf085.105

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Efficacy and safety of injectable bio-revitalizers and rejuvenate therapies, including platelet-rich plasma and exosome-based treatments: A systematic review of licensed products in the UK (2025)

Type of publication:

Conference abstract

Author(s):

*Mehra S.

Citation:

British Journal of Dermatology. Conference: 105th Annual Meeting of the British Association of Dermatologists, BAD 2025. Glasgow United Kingdom. 193(Supplement 1) (pp i34), 2025. Date of Publication: 01 Jul 2025.

Abstract:

The aim of this study was to evaluate the efficacy and safety of injectable bio-revitalizers and rejuvenative therapies licensed under Medicines and Healthcare products Regulatory Agency (MHRA) and National Institute for Health and Care Excellence (NICE) guidelines. These included platelet-rich plasma (PRP) and exosome-based treatments. This review synthesizes clinical outcomes, safety profiles and patient-reported satisfaction to provide evidence-based recommendations for advancing dermatological practice in the UK. A systematic review was conducted following the PRISMA guidelines. Databases including PubMed, MEDLINE, Embase and Cochrane Library were searched for studies published between 2010 and 2023. Keywords included 'injectable bio-revitalisers', 'hyaluronic acid', 'polynucleotides', 'platelet-rich plasma', 'exosome therapy', 'efficacy' and 'safety'. Inclusion criteria focused on licensed products approved in the UK under MHRA and NICE regulations, such as Profhilo, Restylane Skinboosters, Sunekos, Nucleofill, Juvelook, PRP and exosomebased therapies. Data extraction covered clinical efficacy (e.g. hydration, elasticity, wrinkle reduction), safety (e.g. adverse events, tolerability) and patient-reported outcomes. Twenty-six studies involving 2450 patients were included. Key findings highlighted consistent efficacy and safety across therapies. Hyaluronic acid-based bio-revitalizers (e.g. Profhilo, Restylane Skinboosters) improved hydration (20-25%), elasticity (15-18%) and wrinkle reduction, with patient satisfaction rates of 88-90%. Adverse events were limited to transient erythema and swelling. Polynucleotidebased therapies (e.g. Nucleofill, Juvelook) enhanced skin regeneration, provided antioxidant benefits and showed sustained results up to 6 months, with minimal adverse effects and improved firmness (18-22%). PRP showed moderate-to-significant improvements in skin texture and fine lines, with 76% of patients reporting enhanced skin quality. Adverse events were mild. Exosome-based therapies had emerging evidence indicating improvements in tone, texture and collagen stimulation, with high satisfaction rates (89%) and minimal adverse events. In conclusion, injectable bio-revitalizers, including PRP and exosome-based therapies, demonstrate high efficacy and safety profiles when adhering to MHRA and NICE guidelines. These therapies provide innovative, minimally invasive options for skin rejuvenation, with consistent patient satisfaction. Standardized treatment protocols, tailored patient selection criteria, and long-term studies are needed to optimize outcomes. PRP and exosome-based therapies expand regenerative dermatology and enhance patient care. Recommendations for practice are as follows: (i) incorporate PRP and exosome therapies into bio-revitalization strategies, emphasizing regenerative potential; (ii) develop national guidelines for standardized protocols; (iii) establish multicentre registries for tracking long-term outcomes and (iv) implement training programmes on appropriate use and safety considerations. This review offers a comprehensive evaluation of licensed bio-revitalizers and rejuvenate therapies, providing colleagues with evidence-based insights for improving patient care and advancing practice in aesthetic and therapeutic dermatology. The findings serve as a valuable teaching tool, fostering reflection on current practices and encouraging innovation within the field.

DOI: 10.1093/bjd/ljaf085.065

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Psychological impact of hair loss in women: A qualitative systematic review (2025)

Type of publication:

Conference abstract

Author(s):

*Mehra S.

Citation:

British Journal of Dermatology. Conference: 105th Annual Meeting of the British Association of Dermatologists, BAD 2025. Glasgow United Kingdom. 193(Supplement 1) (pp i85), 2025. Date of Publication: 01 Jul 2025.

Abstract:

Hair loss in women is associated with profound psychological distress, affecting mental health, self-esteem and social functioning. This systematic review consolidates findings from qualitative studies to explore the psychological burden of hair loss and evaluate the efficacy of supportive interventions. The aim is to inform best practices for holistic, patient-centred management in dermatology clinics, aligning with National Institute for Health and Care Excellence guidelines and international protocols. This review adhered to the PRISMA guidelines, with a comprehensive search of the PubMed, MEDLINE, PsycINFO and Embase databases for qualitative studies published between 2010 and 2023. Keywords included 'psychological impact', 'hair loss', 'women', 'qualitative studies' and 'supportive interventions'. Inclusion criteria encompassed studies on the emotional and psychological burden of hair loss in women, with or without supportive interventions. Mixed-methods studies were included if qualitative data could be extracted. Singlecase studies and those without a psychological focus were excluded. Data were thematically synthesized to identify psychological impacts and assess the effectiveness of interventions such as counselling, peer support and cosmetic solutions. Twenty-six studies involving 1450 participants met the inclusion criteria. The key findings are reported here. (i) Emotional distress: hair loss caused significant emotional distress, with 78% of women reporting feelings of shame, anxiety or depression. Younger women and those with more extensive hair loss experienced greater psychological burdens. (ii) Impact on self-image: self-esteem was negatively affected in 85% of participants, with themes of loss of femininity and perceived diminished attractiveness. (iii) Social withdrawal: over 60% of women avoided social interactions due to embarrassment, compounding isolation and low selfworth. (iv) Supportive interventions: psychosocial therapies such as cognitive behavioural therapy (CBT) and peer support groups reduced anxiety and improved coping in 68%, while cosmetic solutions such as wigs, scalp micropigmentation and hairpieces enhanced confidence and social reintegration for 72%. Emerging themes underscored the importance of empathic clinician-patient communication, with patients emphasizing the need for guidance and emotional support alongside clinical care. Hair loss in women exerts a profound psychological impact on mental health, self-esteem and social functioning. Supportive interventions, including CBT, peer support and cosmetic solutions, effectively alleviate distress and enhance quality of life. A multidisciplinary approach integrating psychological support into routine care pathways is essential. Recommendations for practice are (i) to implement psychological assessments to identify at-risk patients; (ii) to develop integrated care models combining dermatological and psychological support; (iii) to create age-specific, culturally sensitive interventions and (iv) to educate patients on supportive therapies, fostering proactive engagement. This review highlights the critical need for dermatologists to address both the physical and psychological dimensions of hair loss, offering practical insights for patient-centred care. By incorporating psychological screening, empathetic communication and evidence-based supportive interventions, dermatology clinics can significantly improve patient outcomes.

DOI: 10.1093/bjd/ljaf085.164

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Nail changes as indicators of systemic disease: A systematic review of correlations and diagnostic outcomes (2025)

Type of publication:

Conference abstract

Author(s):

*Mehra S.

Citation:

British Journal of Dermatology. Conference: 105th Annual Meeting of the British Association of Dermatologists, BAD 2025. Glasgow United Kingdom. 193(Supplement 1) (pp i119), 2025. Date of Publication: 01 Jul 2025.

Abstract:

This systematic review evaluates the correlation between nail changes and systemic diseases, assessing their diagnostic utility, sensitivity and specificity. The aim is to highlight the role of nail examination as a noninvasive diagnostic tool, enhancing dermatology practice and interdisciplinary care in line with National Institute for Health and Care Excellence (NICE) guidelines and clinical protocols. This practice is particularly relevant in resource-limited settings, where access to advanced diagnostics may be restricted. A systematic review was conducted following the PRISMA guidelines. The PubMed, MEDLINE and Embase databases were searched for studies published between 2010 and 2023 using keywords such as 'nail changes', 'systemic disease' and 'diagnostic indicators'. Studies were included that analysed correlations between nail abnormalities (e.g. clubbing, Beau's lines, splinter haemorrhages, leuconychia, onycholysis) and systemic diseases like cardiovascular, pulmonary, autoimmune or metabolic conditions. Case reports and studies without statistical analysis were excluded. Data extraction focused on nail abnormalities, associated systemic diseases, and diagnostic metrics such as sensitivity and specificity. Thirty-two studies involving 7250 patients were included. Key findings demonstrated significant correlations between nail changes and systemic diseases. (i) Clubbing was associated with pulmonary and cardiovascular conditions, such as bronchiectasis and congenital heart defects, with a specificity of 92%. (ii) Beau's lines were linked to systemic stressors like severe infections, chemotherapy and malnutrition, with a sensitivity of 81%. (iii) Splinter haemorrhages were observed in vasculitis, infective endocarditis and connective tissue disorders, with a sensitivity of 78%. (iv) Leukonychia was linked to hypoalbuminaemia and liver cirrhosis, with a specificity of 85%. (v) Onycholysis was indicative of thyroid dysfunction, particularly hyperthyroidism, with a diagnostic accuracy of 80%. In 30% of cases, nail changes preceded other clinical manifestations, offering opportunities for early diagnosis and intervention. While nail findings alone lacked specificity in some cases, combining them with clinical history and investigations enhanced utility. These findings are impactful in resource-limited settings, where noninvasive tools can guide early management without expensive testing. This review underscores the value of nail examination as a noninvasive tool for identifying systemic diseases, often serving as an early indicator of pathology. Nail changes such as clubbing, Beau's lines and leuconychia provide clinically significant insights, particularly when integrated with broader assessments. Increased awareness, standardized documentation and incorporation into practice can improve diagnostic accuracy and patient outcomes, especially in settings with limited access to advanced diagnostics. Nail examination is an underutilized diagnostic tool. It bridges dermatology and systemic medicine, prompting timely referrals and collaborative management. In resource-limited settings, it offers an accessible alternative, reducing reliance on costly tests. Standardized protocols should be integrated into NICE guidelines globally.

DOI: 10.1093/bjd/ljaf085.237

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Efficacy and safety of hair gloss treatments: A systematic review of licensed products in the UK (2025)

Type of publication:

Conference abstract

Author(s):

*Mehra S.

Citation:

British Journal of Dermatology. Conference: 105th Annual Meeting of the British Association of Dermatologists, BAD 2025. Glasgow United Kingdom. 193(Supplement 1) (pp i117-i118), 2025. Date of Publication: 01 Jul 2025.

Abstract:

Hair gloss treatments have gained popularity for enhancing shine, hydration and overall hair health. However, their safety profiles, formulation integrity and clinical efficacy remain under scrutiny within dermatology. This systematic review evaluates the efficacy, safety and formulation of licensed hair gloss products in the UK, examining compliance with Medicines and Healthcare products Regulatory Agency (MHRA) and National Institute for Health and Care Excellence guidelines. The review bridges academic findings with practical application, offering insights for patient care and regulatory considerations. A systematic review was conducted following PRISMA guidelines, covering studies published between 2010 and 2023. Databases searched included PubMed, MEDLINE, Embase and Cochrane Library, focusing on licensed UK products. Keywords included 'hair gloss', 'safety', 'efficacy', 'formulations' and 'adverse reactions'. Products analysed were Olaplex No. 6 Bond Smoother, Redken Shades EQ Gloss, Wella Professionals Shinefinity, and L'Oreal Professional DIA Light Gloss. Data extracted included efficacy metrics (e.g. shine, hydration and smoothness), safety outcomes (e.g. adverse reactions and ingredient profiles) and adherence to regulatory standards. Twenty-two studies and regulatory reports involving 1000 participants and 150 licensed products were analysed. Key findings include the following. (i) Efficacy. Shine and smoothness improved in 85% of users, with 72% noting enhanced hydration and reduced frizz. Benefits lasted 4-6 weeks. Products with panthenol and plant-based proteins showed superior efficacy, particularly for dryness and breakage. (ii) Safety profiles. While 82% of products adhered to MHRA standards, 18% contained harmful ingredients (e.g. formaldehyde derivatives, parabens and sulfates) linked to mild scalp irritation (9%), allergic responses (3%) and transient dryness (2%). Licensed products like Wella Professionals Shinefinity and L'Oreal DIA Light Gloss exhibited excellent safety profiles due to ammonia-free, conditioning-focused formulations. (iii) Formulation integrity. 'Ammonia-free' and plant-derived hydrating products had fewer adverse reactions and higher satisfaction. Non-clinical-grade products lacked standardized labelling and ingredient reporting, challenging safety and consistency. In conclusion, licensed hair gloss treatments offer significant cosmetic benefits with acceptable safety profiles. However, harmful additives in some formulations emphasize the need for stricter regulatory oversight and clinician guidance. Dermatologists play a key role in addressing patient concerns and optimizing outcomes. Recommendations for practice are as follows. (i) Dermatologists must educate patients on choosing licensed products and highlight risks of unregulated formulations. (ii) Stricter labelling standards and transparency are essential. (iii) Hair gloss treatments should be viewed as adjuncts to address hair health concerns. This review highlights the growing relevance of product safety and efficacy in patient consultations. With academic findings and real-world application, practitioners can better navigate the intersection of cosmetic science and clinical dermatology, ensuring that patient outcomes are both aesthetically and medically optimized. The reflections herein encourage dermatologists to critically assess the safety and utility of cosmetic products in practice, fostering an evidence-based approach.

DOI: 10.1093/bjd/ljaf085.233

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A Joint Venture: Advancing Health Equity for Underserved Communities Through Integrated Dermatology–Rheumatology Clinics (2025)

Type of publication:

Poster presentation

Author(s):

*Zal Canteenwala; *Dimple Jain; Roshan Amarasena; Joseph Thevathasan; Heli Baho; Kunal Amin

Citation:

British Journal of Dermatology, Volume 193, Issue Supplement 1, July 2025

Abstract:

Autoimmune conditions with overlapping dermatological and rheumatological manifestations present significant management challenges in rural healthcare settings. The aim of this study was to evaluate whether a newly established combined dermatology–rheumatology clinic could improve healthcare access and patient satisfaction while maintaining clinical effectiveness. This service was delivered through cross-trust collaboration between two hospitals situated approximately 30 miles apart, serving a geographically dispersed population with significant access barriers. A 6-month prospective quality improvement initiative was conducted from April to October 2022. Monthly combined consultant-led clinics were evaluated using structured questionnaires assessing patient satisfaction, operational efficiency and educational impact. The service integrated specialist care between distinct National Health Service trusts, centralizing care delivery at a single site to enhance healthcare equity for traditionally underserved rural populations. Data collection included both quantitative metrics and qualitative responses from patients attending these integrated clinics. Data were analysed using descriptive statistics, with 95% confidence intervals (CIs) calculated for key metrics. Qualitative responses were coded thematically to identify common patterns. The study demonstrated unanimous patient satisfaction at 100% (49 of 49, 95% CI 92.7–100) with the combined clinic format. Healthcare access improved significantly, with 92% (45 of 49, 95% CI 78.1–98.3) reporting reduced travel costs and 96% (44 of 46, 95% CI 85.5–99.5) citing streamlined appointment coordination. This impact is particularly significant given the region’s poor public transport infrastructure, which has seen a substantial decline in bus services over the past decade. Employment impact analysis revealed that while 31% (15 of 49, 95% CI 17.7–43.5) of patients previously required time off work for separate appointments, the combined clinic significantly reduced this burden. Qualitative analysis identified consistent themes of improved comprehensive care delivery and enhanced time efficiency. The clinic proved particularly beneficial for managing complex conditions such as psoriatic arthritis and systemic lupus erythematosus, where concurrent specialist evaluation facilitated more precise diagnostic formulation and therapeutic planning. Educational benefits were noted among participating medical students, who reported enhanced understanding of interdisciplinary care and complex disease management. In conclusion, the combined dermatology–rheumatology clinic demonstrates significant efficacy in addressing healthcare inequities in rural settings, with high patient satisfaction and operational efficiency. This cross-trust collaborative model shows particular value in managing complex autoimmune conditions requiring multispecialty input while simultaneously reducing travel burden and improving care coordination. These findings support the broader implementation of integrated specialty clinics across geographically dispersed regions, with potential applications for other specialty combinations.

DOI: 10.1093/bjd/ljaf085.095

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A Joint Venture: Advancing Health Equity for Underserved Communities Through Integrated Dermatology-Rheumatology Clinics (2025)

Type of publication:

Journal article

Author(s):

*Canteenwala, Zal; Thevathasan, Joseph; Baho, Heli George; Amin, Kunal; *Jain, Dimple; Amarasena, Roshan

Citation:

Cureus 17(10): e94590. doi:10.7759/cureus.94590

Abstract:

Background
Patients with immune-mediated disease often need both dermatology and rheumatology input. Separate appointments can increase travel and delay decisions, particularly in rural settings. We evaluated a monthly combined clinic in a rural UK catchment.

Methods
We conducted a prospective service evaluation (April-October 2022) of a consultant-led, co-located dermatology-rheumatology clinic. Forty-nine consecutive adult attendees completed an anonymous post-visit questionnaire on perceived usefulness, satisfaction, avoided appointments, travel costs, and prior time off work; free-text responses were thematically analysed by two reviewers. We report proportions with exact Clopper-Pearson 95% confidence intervals (CIs), with denominators varying due to item non-response.

Results
We analysed 49 questionnaires. All respondents viewed the joint appointment as a good idea (49/49; 100.0%; 95% CI 92.7-100.0), and all were satisfied (47/47; 100.0%; 95% CI 92.5-100.0). The clinic avoided an additional appointment for 44/46 (95.7%; 95% CI 85.2-99.5) and reduced out-of-pocket travel costs for 39/40 (97.5%; 95% CI 86.8-99.9). Among employed respondents, 19/36 (52.8%; 95% CI 35.5-69.6) reported previously needing time off work for separate specialty visits.

Conclusions
In a rural, cross-trust NHS setting, a combined dermatology-rheumatology clinic was feasible and associated with high patient-reported usefulness and satisfaction, fewer duplicate visits, and lower travel costs. Findings support continued provision and motivate comparative and economic evaluations using routine utilisation and cost data.

DOI: 10.7759/cureus.94590

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Comprehensive Review on Hair Loss and Restorative Techniques: Advances in Diagnostic, Artistry, and Surgical Innovation (2025)

Type of publication:

Journal article

Author(s):

Mendoza, Luis A; Ocampo, Genaro G; Abarca-Pineda, Yozahandy A; Ahmad Khan, Mubashir; *Ahmadi, Yasmin; Brown, Najaee; Deowan, Denyse; Nazir, Zahra.

Citation:

Cureus. 17(4):e82991, 2025 Apr.

Abstract:

Hair loss, or alopecia, is a complex disorder that impacts individuals worldwide, frequently resulting in significant psychological and social consequences. This review analyzes the multifactorial etiology, recent diagnostic innovations, and emerging treatment alternatives for hair loss management. Alopecia is classified into the cicatricial (scarring) and non-cicatricial (non-scarring) forms, each having a unique underlying pathogenesis, ranging from autoimmune dysregulation, androgenetic mechanisms, and environmental factors. Recent advancements in diagnostics, such as artificial intelligence (AI)-enhanced imaging and biomarker analysis, have improved precision and individualization of treatment. Novel therapies, such as low-dose oral minoxidil (LDOM), topical 5-alpha reductase inhibitors, and Janus kinase inhibitors (JAKi), offer a range of promising options for hair loss management. Non-invasive therapies, such as low-level laser therapy (LLLT) and platelet-rich plasma (PRP) injections, have demonstrated synergistic benefits with existing treatments. Surgical advancements, especially AI-assisted robotic
follicular unit extraction (FUE), enhance precision and outcomes. Emerging trends in regenerative medicine, especially stem-cell-based therapies and AI integration, are influencing the future of customized hair restoration. This review serves as a comprehensive guide, highlighting the use of innovative technologies and therapies in enhancing the accuracy and customization of hair loss treatment.

DOI: 10.7759/cureus.82991

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A Comprehensive Review of the Role of UV Radiation in Photoaging Processes Between Different Types of Skin (2025)

Type of publication:

Journal article

Author(s):

Brar, Gurjasan; Dhaliwal, Anoop; Brar, Anupjot S; Sreedevi, Manasa; *Ahmadi, Yasmin; Irfan, *Muhammad; Golbari, Rebecca; Zumarraga, Daniela; *Yateem, Dana; Lysak, Yuliya; Abarca-Pineda, Yozahandy A.

Citation:

Cureus. 17(3):e81109, 2025 Mar.

Abstract:

Ultraviolet (UV) radiation significantly contributes to photoaging, with its effects varying among different Fitzpatrick skin types. Light skin (Types I-III) has a natural sun protection factor (SPF) of only 3.3, making it particularly vulnerable to DNA damage, collagen degradation, and skin cancer. Darker skin (Types IV-VI) has a natural SPF of 13.4, providing greater photoprotection while elevating the risk of post-inflammatory hyperpigmentation and delaying skin cancer diagnosis. UVA penetrates deep into the dermis, promoting collagen degradation, whereas UVB causes DNA mutations, increasing the risk of cancer. Eumelanin in darker skin mitigates oxidative stress, while pheomelanin in lighter skin functions as a pro-oxidant, increasing vulnerability to photoaging. Although incidence rates are lower, melanoma is identified at more advanced stages in those with darker skin, resulting in poorer outcomes. Protective measures, such as broad-spectrum sunscreens, antioxidants, and hydration, are crucial for all skin types but necessitate customized strategies. Individuals with lighter skin benefit from SPF 50+ and DNA-repairing compounds, whereas those with darker complexion necessitate SPF 30-50 and pigmentation-focused skincare. Comprehending the biological mechanisms and variations in UV damage facilitates the creation of customized photoprotection solutions, enhancing skin health and mitigating long-term UV-related issues for all skin types.

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Alopecia Areata: Understanding the Pathophysiology and Advancements in Treatment Modalities (2025)

Type of publication:

Journal article

Author(s):

Abarca, Yozahandy A; Scott-Emuakpor, Renee; Tirth, Jhanavi; Moroz, Oksana; Thomas, George Pandarakalam; *Yateem, Dana; Golbari, Rebecca; Aphia, Ninigail; Lysak, Yuliya; Narasimhan, Niketa; Siddiqui, Humza F.

Citation:

Cureus. 17(1):e78298, 2025 Jan.

Abstract:

Alopecia areata (AA) is an autoimmune condition that presents with non-scarring hair loss affecting multiple patients worldwide during their lifetime. It ranges from well-defined patchy to diffuse total hair loss, impacting all hair-bearing areas of the body. AA most commonly predominantly manifests on the scalp. The pathophysiology of AA is complex and multi-faceted. The findings of our review article were consistent with the recent literature, delineating autoimmunity, genetic susceptibility, and environmental aspects to be the contributing factors. One of the main causes of AA is believed to be the disruption in the immune privilege of the hair follicles. Multiple genetic loci involved in hair follicle maturation and immune process have been linked to the development of AA as evidenced by several studies. It has been postulated that psychological stressors, smoking, alcohol consumption, sleep disturbances, gut microbiota, and drugs play a role in the pathogenesis of AA by exacerbating the immune response against the hair follicles. AA is a clinically diagnosed disorder. Topical, intra-lesional, and oral corticosteroids, topical and oral minoxidil, cyclosporine, and other immune therapy drugs are widely accepted first-line treatment options, although incomplete remission and relapses are common. Recently JAK-2 inhibitors and mesenchymal stem cell exosomes have shown promising results, potentially treating severe and refractory hair loss. AA has a bidirectional relationship with psychological symptoms as it can lead to social anxiety and depression, which in turn can aggravate hair loss. Hence, it is crucial to implement a holistic approach to managing AA including topical and systemic therapies, psychological counseling, and lifestyle modifications. It is imperative to fully declinate the pathophysiological mechanisms of the disease and formulate therapies in future research to help clinicians and dermatologists devise definitive guidelines to treat the condition for long-term remission.

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