{"title":"Nail Supplements: When, How, and Why?","authors":"Ines Zaraa, Bertrand Richert","doi":"10.1159/000541048","DOIUrl":"10.1159/000541048","url":null,"abstract":"<p><strong>Background: </strong>The number of supplements for nail health is continuously increasing, and consumers are no longer familial with them, which can create confusion, as they do not always understand what they are consuming, and some will seek advice from their dermatologist, who must have as clear and a precise answer.</p><p><strong>Summary: </strong>Biotin, collagen peptides, solubilized keratin MSM, and choline-stabilized orthosilicic acid have been shown to improve the clinical appearance of nails, strength, and brittleness. There is a lack of regulation from the health authorities concerning dietary supplements. Manufacturers are not required to carry out efficacy and safety studies before marketing.</p><p><strong>Key messages: </strong>Dermatologists must be aware of the ingredients available on the market, their possible benefits but also their risks. It is important to specify to patients that our recommendations are as solid as the available evidence. In this article, we will discuss about the supplements available for nails, their mechanisms of action, and possible side effects.</p>","PeriodicalId":21844,"journal":{"name":"Skin Appendage Disorders","volume":"11 2","pages":"176-181"},"PeriodicalIF":1.4,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11961095/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143773489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luis Eduardo Prieto, Diana Marcela Vasquez-Forero, Harry Pachajoa
{"title":"The First Colombian Patient with <i>CDH3</i>-Related Hypotrichosis with Juvenile Macular Dystrophy.","authors":"Luis Eduardo Prieto, Diana Marcela Vasquez-Forero, Harry Pachajoa","doi":"10.1159/000545293","DOIUrl":"https://doi.org/10.1159/000545293","url":null,"abstract":"<p><strong>Introduction: </strong>Ectodermal dysplasias (ED) encompass a broad group of hereditary disorders, within which both the structure and functionality of various ectoderm-derived tissues can be affected depending on the involved gene. Congenital hypotrichosis with juvenile macular dystrophy is one of the entities included in ED, which is associated with an alteration in the <i>CDH3</i> gene encoding P-cadherin.</p><p><strong>Case presentation: </strong>We describe a 6-year-old patient with history of atopic dermatitis, amblyopia, and reduced vision acuity. Physical examination revealed hypotrichosis on the scalp with alopecia patches, microretrognathia, dental enamel abnormalities, dry skin, keratosis pilaris. Molecular analysis identified a homozygous variant in the <i>CDH3</i> gene (NM_001793.6) c.1508G>A p.Arg503His.</p><p><strong>Conclusion: </strong>We present the first Colombian case of clinical and molecular diagnosis of hypotrichosis with juvenile macular dystrophy associated with <i>CDH3</i>.</p>","PeriodicalId":21844,"journal":{"name":"Skin Appendage Disorders","volume":" ","pages":"1-7"},"PeriodicalIF":1.4,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052343/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144027152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Episodes of Keratitis during Treatment with Baricitinib for Alopecia Areata.","authors":"Dorottya Godor, Anastasia Therianou","doi":"10.1159/000544920","DOIUrl":"10.1159/000544920","url":null,"abstract":"<p><strong>Introduction: </strong>There is scarce evidence in the literature regarding the association of JAK inhibitors and keratitis.</p><p><strong>Case presentation: </strong>We present the case of a 33-year-old woman with alopecia areata who developed 3 episodes of keratitis within 2 months of treatment with baricitinib, a JAK1/JAK2 inhibitor, and had to therefore stop treatment with baricitinib.</p><p><strong>Conclusion: </strong>On review of the literature regarding ocular side effects with JAK inhibitors, these seem rare but not exceptional. At this time, a casual link cannot be established. To exercise caution, clinicians should be aware of possible ocular adverse events in patients using JAK inhibitors and should also report these cases to the relevant drug safety agencies. Discontinuing the drug and switching to an alternative agent may also be necessary.</p>","PeriodicalId":21844,"journal":{"name":"Skin Appendage Disorders","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12511536/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145281191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Secondary Intention Healing after Functional Surgery for Melanoma of the Nail Apparatus: Functional, Cosmetic, and Patient Satisfaction Results.","authors":"Jonathan Stevens, Martín Céspede-Núñez","doi":"10.1159/000545468","DOIUrl":"https://doi.org/10.1159/000545468","url":null,"abstract":"<p><strong>Introduction: </strong>Functional surgery is the preferred approach for nail melanoma in situ (NMIS) and minimally invasive nail melanoma (MINM, Breslow ≤0.5 mm). Secondary intention healing (SIH) offers an alternative to traditional skin grafting, with favorable cosmetic, functional, and satisfaction outcomes and minimal complications.</p><p><strong>Methods: </strong>Six patients (mean age 54.8 years; 4 SMIS, 2 MISSM) underwent functional surgery with SIH. Healing times (granulation [T1] and re-epithelialization [T2]), complications, and outcomes were assessed at 12 weeks using QUICK-DASH, VBSAS, VAS, satisfaction scores, and DLQI.</p><p><strong>Results: </strong>Mean T1 and T2 were 2.83 and 8.45 weeks, respectively. One patient experienced intense postoperative pain; another had a late nail spike. No hyperpigmentation or recurrences were observed. Outcomes: QUICK-DASH 18.92%; VBSAS 2.8 (12 weeks) and 0.25 (24 weeks); VAS 2; DLQI 2; and satisfaction 9.8/10 (10/10 after amputation discussion).</p><p><strong>Conclusions: </strong>SIH provides an effective alternative to grafting, allowing acceptable healing times, flexibility for margin extension or amputation, and excellent cosmetic, functional, and satisfaction outcomes with minimal complications.</p>","PeriodicalId":21844,"journal":{"name":"Skin Appendage Disorders","volume":" ","pages":"1-8"},"PeriodicalIF":1.4,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12058123/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144047661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anuradha Calicut Kini Rao, Rakshatha Nayak, P S M Ameer Ali, Shikha Jayasheelan, Kudurugundi Basavaraju Vatsala
{"title":"Malignant Hidradenoma of the Scalp: A Rare Case with Diagnostic Challenges and Immunohistochemical Insights.","authors":"Anuradha Calicut Kini Rao, Rakshatha Nayak, P S M Ameer Ali, Shikha Jayasheelan, Kudurugundi Basavaraju Vatsala","doi":"10.1159/000545383","DOIUrl":"https://doi.org/10.1159/000545383","url":null,"abstract":"<p><strong>Introduction: </strong>Hidradenocarcinoma is an extremely rare and aggressive malignant tumor originating from eccrine sweat glands. It typically presents with nonspecific clinical features, which makes early diagnosis challenging. The tumor is known for its potential for recurrence and metastasis, often complicating management.</p><p><strong>Case presentation: </strong>A 57-year-old male presented with a painless, gradually enlarging swelling on the scalp, which had been present for 2.5 years. Initially suspected to be an infected sebaceous cyst, the lesion was excised. Histopathological analysis revealed malignant hidradenoma, characterized by clear cytoplasm, nuclear pleomorphism, and increased mitotic activity. Immunohistochemical staining showed 22% Ki-67 and 14% p53 expression, confirming malignancy. No metastasis was found.</p><p><strong>Conclusion: </strong>Malignant hidradenoma is a rare and aggressive cutaneous tumor that can be challenging to diagnose due to its nonspecific presentation. Early recognition and wide surgical excision are essential for better prognosis and to prevent recurrence or metastasis.</p>","PeriodicalId":21844,"journal":{"name":"Skin Appendage Disorders","volume":" ","pages":"1-6"},"PeriodicalIF":1.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052352/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144969641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Stefano Veraldi, Gianluca Nazzaro, Italo Francesco Aromolo, Luigi Valenzano
{"title":"Two Cases of Scabies Located Exclusively on a Toenail: A Case Report.","authors":"Stefano Veraldi, Gianluca Nazzaro, Italo Francesco Aromolo, Luigi Valenzano","doi":"10.1159/000545326","DOIUrl":"https://doi.org/10.1159/000545326","url":null,"abstract":"<p><strong>Introduction: </strong>Nail involvement in patients with crusted scabies is well known. It is characterized clinically by subungual hyperkeratosis and onycholysis. \"Classical\" scabies involving the nails was rarely reported.</p><p><strong>Case presentations: </strong>We describe 2 patients with classical scabies located exclusively on a toenail. In the first patient, the complete disappearance of the nail plate was observed. In the second patient, a thick, greyish-brown nail plate, surrounded by scales, was observed. Both patients were successfully treated with permethrin and ivermectin.</p><p><strong>Conclusion: </strong>A possible explanation about the fact that scabies remained limited to only one toenail is suggested.</p>","PeriodicalId":21844,"journal":{"name":"Skin Appendage Disorders","volume":" ","pages":"1-4"},"PeriodicalIF":1.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052362/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144969624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jorge Ocampo-Garza, Adriana G Peña-Romero, Eduardo Bertolli, Mayra A Reyes Soto, Nilton Gioia Di Chiacchio, Francisco A Belfort, Veronica Fonte-Avalos, Nilton Di Chiacchio, Judith Domínguez-Cherit
{"title":"Non-Amputative Digit Preservation Surgery versus Amputation in Nail Unit Melanoma: A Retrospective Study in Mexico and Brazil.","authors":"Jorge Ocampo-Garza, Adriana G Peña-Romero, Eduardo Bertolli, Mayra A Reyes Soto, Nilton Gioia Di Chiacchio, Francisco A Belfort, Veronica Fonte-Avalos, Nilton Di Chiacchio, Judith Domínguez-Cherit","doi":"10.1159/000544995","DOIUrl":"https://doi.org/10.1159/000544995","url":null,"abstract":"<p><strong>Introduction: </strong>Nail unit melanoma (NUM) is a rare but aggressive malignancy with historically poor outcomes. Currently, there are no treatment guidelines for NUM.</p><p><strong>Methods: </strong>A retrospective analysis was conducted on patients diagnosed with NUM in Mexico and Brazil. Clinical and histopathological data were reviewed, and outcomes were compared between those who underwent amputation versus digit preservation surgery. Survival rates, recurrence, and functional status were assessed.</p><p><strong>Results: </strong>A total of 75 patients from Mexico (51.9%) and Brazil (48.1%) were evaluated. Clinical and pathological characteristics were similar between both groups. Functional surgery was performed in 40 patients (49.4%), including six with invasive melanomas. The median follow-up was 50.3 months (95% CI: 29.4-71.3, SE: 10.7). Among the 7 patients with invasive melanomas who underwent functional surgery, one experienced a recurrence, and one died from a cerebrovascular accident. The remaining 5 patients are alive and disease-free, with follow-up periods ranging from 1 to 27 months.</p><p><strong>Conclusions: </strong>Non-amputative surgery may be a safe alternative for thin NUMs, reducing amputation-related morbidity. Long-term follow-up and larger studies are needed to confirm guidelines.</p>","PeriodicalId":21844,"journal":{"name":"Skin Appendage Disorders","volume":" ","pages":"1-9"},"PeriodicalIF":1.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052374/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144038764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dermatological Comorbidities Accompanying Rosacea and Their Relationship with Clinical and Demographic Features, Quality of Life, and Systemic Comorbidities: A Retrospective, Case-Controlled, Multicenter Survey.","authors":"Berna Aksoy, Elif Yıldırım, Ezgi Aktaş, Mualla Polat, Kıymet Handan Kelekci, Mustafa Tosun, Aysun Sikar Aktürk, Ilkin Zindancı, Seniz Duygulu, Emine Çölgeçen, Zehra Asiran Serdar, Ömer Kutlu, Neslihan Fişek İzci, Ayşe Serap Karadağ","doi":"10.1159/000545295","DOIUrl":"https://doi.org/10.1159/000545295","url":null,"abstract":"<p><strong>Introduction: </strong>As rosacea patients are generally light-skinned and photosensitized some sun-related skin findings are likely to be observed. This study aimed to determine which dermatological comorbidities accompany rosacea and evaluate their relationship with clinical, demographic, quality-of-life, and systemic comorbidities.</p><p><strong>Methods: </strong>This case-control multicenter study was conducted by the Turkish Society of Dermatology Acne Study Group. Patient demographics, clinical findings, lifestyle data, medical history, and dermatological comorbidities were collected using a structured physician-administered questionnaire. All patients completed the Dermatology Life Quality Index.</p><p><strong>Results: </strong>The study included 922 rosacea patients and 799 controls without rosacea. Rosacea patients had higher dermatological comorbidities than controls. The prevalence of skin comorbidities increased as patient age and duration of rosacea increased. Additionally, these skin comorbidities negatively affected quality of life. Some dermatological comorbidities, especially civatte poikiloderma, had strongest predictive risk (odds ratio ⫺3) of significant systemic comorbidities.</p><p><strong>Conclusion: </strong>Based on the present findings, clinicians should also assess rosacea patients for cutaneous dermatological comorbidities. Presence of skin comorbidities increased as patient age and duration of rosacea increased and might be predictive of systemic comorbidities.</p>","PeriodicalId":21844,"journal":{"name":"Skin Appendage Disorders","volume":" ","pages":"1-7"},"PeriodicalIF":1.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052370/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144047658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Scarring Alopecia and Risk of Skin Cancer: A Literature Review.","authors":"Juwon Lee, Ludovica de Gregorio, Antonella Tosti","doi":"10.1159/000545345","DOIUrl":"https://doi.org/10.1159/000545345","url":null,"abstract":"<p><strong>Background: </strong>Primary scarring alopecia is characterized by irreversible hair follicle destruction and chronic inflammation, which may create a microenvironment conducive to skin cancer development. Non-melanoma skin cancers (NMSCs), such as squamous cell carcinoma (SCC) and basal cell carcinoma (BCC), are influenced by factors like UV exposure and prolonged inflammation. The link between primary scarring alopecia and increased scalp skin cancer risk remains unclear.</p><p><strong>Summary: </strong>This review analyzed thirteen studies reporting NMSC in primary scarring alopecia subtypes, including lichen planopilaris, discoid lupus erythematosus, folliculitis decalvans, and erosive pustular dermatosis of the scalp. Chronic inflammation, UV exposure, and immunosuppressive therapies were identified as potential contributors to malignancy.</p><p><strong>Key messages: </strong>Primary scarring alopecia may increase susceptibility to SCC and BCC, particularly in areas of prolonged inflammation or immunosuppression. Clinicians should emphasize sun protection, routine follow-up, and patient education to minimize risk and improve outcomes. Further research is needed to clarify these associations.</p>","PeriodicalId":21844,"journal":{"name":"Skin Appendage Disorders","volume":" ","pages":"1-8"},"PeriodicalIF":1.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12052342/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144064459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Selenium Disulfide-Based Shampoo Is Beneficial for Dandruff Management and Rebalancing the Scalp Microbiome of Subjects of Any Hair Type.","authors":"Pascal Edouard Reygagne, Claire Deloche-Bensmaine, Stephanie Leclerc-Mercier, Julie Faure, Natalia Kovylkina, Cecile Clavaud, Audrey Gueniche, Victoria Barbosa","doi":"10.1159/000544742","DOIUrl":"10.1159/000544742","url":null,"abstract":"<p><strong>Introduction: </strong>Dandruff is a chronic scalp condition occurring in all hair types. Selenium disulfide (SeS<sub>2</sub>) shampoo is beneficial in dandruff and rebalances the scalp microbiome. However, data regarding subjects with curly hair are missing. This study assessed the clinical and scalp microbiome benefits of SeS<sub>2</sub> shampoo in subjects of any hair type with moderate-to-severe dandruff.</p><p><strong>Methods: </strong>A 6-week study in adult subjects of any De La Mettrie hair type (I-VIII) assessed total dandruff, SD severity score (SSSD), erythema, hair greasiness, quality of life, discomfort, local tolerance, perceived benefit, acceptability, cosmeticity, and changes in the scalp microbiota. SeS<sub>2</sub> shampoo was applied twice every week.</p><p><strong>Results: </strong>Overall, 93 subjects of any hair type (women: 83%, hair types: I-III: 41%, IV-V: 29%, VI-VIII: 30%) were recruited. 69% were of European and 31% of African origin. SSSD and total dandruff scores were the highest in hair type IV-V, erythema scores in hair type I-III, and the itching score in hair type VI-VIII, with no differences between hair types for any parameter. After 4 weeks, clinical signs and subject assessments had significantly (all <i>p</i> < 0.05) decreased in all phototypes. SeS<sub>2</sub> shampoo significantly (<i>p</i> < 0.001) rebalanced the scalp microbiome. All subjects highly appreciated its benefit, acceptability, and cosmeticity. SeS<sub>2</sub> shampoo was well tolerated.</p><p><strong>Conclusion: </strong>SeS<sub>2</sub> shampoo is beneficial in moderate-to-severe dandruff and rebalances the scalp microbiota in all hair types. SeS<sub>2</sub> shampoo was highly appreciated by the subjects for its benefit, acceptability, and cosmeticity, allowing a potential improvement of compliance, including in the long term.</p>","PeriodicalId":21844,"journal":{"name":"Skin Appendage Disorders","volume":" ","pages":"1-12"},"PeriodicalIF":1.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12084028/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144094608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}