Megan Johnson, Marie Clark, Carli Whittington, Edita Newton
{"title":"Adverse dermatologic effects of erdafitinib in a patient with metastatic urothelial carcinoma.","authors":"Megan Johnson, Marie Clark, Carli Whittington, Edita Newton","doi":"10.25251/zj7ws289","DOIUrl":"10.25251/zj7ws289","url":null,"abstract":"<p><p>Erdafitinib is a fibroblast growth factor receptor 1-4 inhibitor used for locally advanced or metastatic urothelial carcinoma in patients who have experienced disease progression after at least 1 prior systemic therapy. Various cutaneous side effects of erdafitinib have been reported, most commonly stomatitis and nail changes such as onycholysis, nail dystrophy, and paronychia. However, onychomadesis is a rarer nail toxicity that can cause significant discomfort and may necessitate treatment interruption. We present the case of a 61-year-old White man with metastatic urothelial carcinoma treated with 8 mg of erdafitinib daily who developed diffuse onychomadesis within a few months of initiating therapy. Awareness of the potential cutaneous side effects of erdafitinib and timely referral for specialty dermatologic care are important to allow treatment continuation.</p>","PeriodicalId":11040,"journal":{"name":"Dermatology online journal","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148162455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Foreign body granuloma following leech therapy in hidradenitis suppurativa: A case complicated by lymphedema.","authors":"Zeynep Altan Ferhatoglu, Yusuf Demir, Suheyla Kaya, Burhan Engin, Cuyan Demirkesen","doi":"10.25251/beg3tr50","DOIUrl":"https://doi.org/10.25251/beg3tr50","url":null,"abstract":"","PeriodicalId":11040,"journal":{"name":"Dermatology online journal","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148162030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mariana Orduz Robledo, María José Giraldo Parra, Stephany Arias Linthon, Mariana Estrada Villamizar, Adriana Motta, Mariam Rolon
{"title":"Dermoscopy and trichoscopy in Klippel-Trénaunay syndrome.","authors":"Mariana Orduz Robledo, María José Giraldo Parra, Stephany Arias Linthon, Mariana Estrada Villamizar, Adriana Motta, Mariam Rolon","doi":"10.25251/55hfj387","DOIUrl":"10.25251/55hfj387","url":null,"abstract":"<p><p>Klippel-Trénaunay syndrome (KTS) is a slow-flow vascular malformation characterized by the triad of capillary malformation, limb hypertrophy, and venous malformation, with or without lymphatic malformation. Diagnosis requires the presence of at least 2 of these 3 clinical features; however, there is no consensus regarding dermoscopic or trichoscopic findings. We present the case of a 54-year-old woman with a history of congenital arteriovenous malformation who exhibited clinical, histopathologic, dermoscopic, and trichoscopic findings suggestive of KTS associated with a lower right limb ulcer. We describe a case of KTS diagnosed in adulthood and highlights the potential use of adjunctive diagnostic tools, including trichoscopy and dermoscopy.</p>","PeriodicalId":11040,"journal":{"name":"Dermatology online journal","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148161412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mina Ghali, Bishoy Abdelmalik, Logan Rs Hubbert, Helana Ghali, Laurie A Temiz, Zoe M Lipman, Ann Lin, Sharon E Albers
{"title":"A comprehensive approach to skin protection against ultraviolet radiation: Integrating sunscreens, antioxidants, DNA repair agents, oral supplements, and probiotics.","authors":"Mina Ghali, Bishoy Abdelmalik, Logan Rs Hubbert, Helana Ghali, Laurie A Temiz, Zoe M Lipman, Ann Lin, Sharon E Albers","doi":"10.25251/mp7v6y10","DOIUrl":"10.25251/mp7v6y10","url":null,"abstract":"<p><p>As melanoma rates continue to rise, there is an increasing need for comprehensive strategies to mitigate the harmful effects of ultraviolet (UV) radiation. This review explores an integrative approach to photoprotection that combines traditional mineral and chemical UV filters with emerging protective strategies, including antioxidants, oral supplementation, DNA repair agents, and probiotics. By addressing UV-induced damage at multiple levels, this multifaceted approach may enhance skin protection and help reduce the long-term risk of photoaging and skin cancer.</p>","PeriodicalId":11040,"journal":{"name":"Dermatology online journal","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148162374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Don't miss the clue in the crease: Recognition of childhood flexural comedones.","authors":"Jennifer Roux, Sarah J Coates, Deeti J Pithadia","doi":"10.25251/x14pcf74","DOIUrl":"https://doi.org/10.25251/x14pcf74","url":null,"abstract":"","PeriodicalId":11040,"journal":{"name":"Dermatology online journal","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148161998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cláudia Brazão, João Borges-Costa, Sofia Antunes-Duarte, Dora Mancha, Lanyu Sun, Tiago Marques, Maria João Gargaté, Anabela Vilares, Tânia Reis, Pedro de Vasconcelos, Luís Soares-de-Almeida, Paulo Filipe
{"title":"A New World disease: Dual diagnostic challenges in travelers returning from Costa Rica.","authors":"Cláudia Brazão, João Borges-Costa, Sofia Antunes-Duarte, Dora Mancha, Lanyu Sun, Tiago Marques, Maria João Gargaté, Anabela Vilares, Tânia Reis, Pedro de Vasconcelos, Luís Soares-de-Almeida, Paulo Filipe","doi":"10.25251/gab6mm81","DOIUrl":"10.25251/gab6mm81","url":null,"abstract":"<p><p>Cutaneous diseases in returning travelers encompass a wide spectrum of etiologies and often pose diagnostic challenges. We present the cases of a 50-year-old man and a 57-year-old woman who presented with a 3-month history of erythematous, ulcerated plaques with well-defined elevated borders and a necrotic center on the lower limbs that began 3 weeks after returning from vacation in Costa Rica. Cutaneous biopsy revealed epidermal ulceration and extensive caseating granulomas throughout the full thickness of the dermis. Giemsa staining revealed no amastigotes. Microbiological examinations identified Leishmania braziliensis and excluded mycobacteria and fungi. The diagnosis of cutaneous leishmaniasis was established. Owing to clinical severity and antimonial unavailability, the man was treated with liposomal amphotericin B. The woman underwent surgical excision of the single lesion, along with oral fluconazole. Complete resolution was documented in both patients. These cases, which posed diagnostic and therapeutic challenges, highlight that cutaneous leishmaniasis, in all its versatile and often perplexing presentations, is a parasitic infection that should always be considered in dermatologic patients returning from vacation in endemic countries.</p>","PeriodicalId":11040,"journal":{"name":"Dermatology online journal","volume":"31 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148162235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Beyond the scalpel: rare and experimental nonsurgical treatments for basal cell carcinoma.","authors":"Elen Deng, Amor Khachemoune","doi":"10.25251/z041c253","DOIUrl":"10.25251/z041c253","url":null,"abstract":"<p><p>Basal cell carcinoma (BCC) is typically found on sun-exposed skin and is the most common form of skin cancer. Risk factors include male sex, fair skin, increased ultraviolet radiation exposure, prior history of BCC, chronic arsenic exposure, genetic predisposition, and immunosuppression. BCC is a slow-growing tumor that typically presents as a shiny and pink papule or nodule with telangiectasias. However, its presentation varies depending on the histological type, which can be confirmed by biopsy. First-line therapies for low-risk BCC include standard surgical excision and curettage and electrodesiccation, whereas the gold standard for high-risk BCC is Mohs microscopic surgery. This review summarizes the current guidelines for BCC treatment and discusses the mechanism of action and clinical implications of alternative rare, experimental, and anecdotal treatments in the literature.</p>","PeriodicalId":11040,"journal":{"name":"Dermatology online journal","volume":"31 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148162299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Association of alopecia areata with COVID-19 vaccination: A vaccine adverse events reporting system analysis.","authors":"Aarushi K Parikh, Shari R Lipner","doi":"10.25251/p2njr764","DOIUrl":"https://doi.org/10.25251/p2njr764","url":null,"abstract":"","PeriodicalId":11040,"journal":{"name":"Dermatology online journal","volume":"31 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148162197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jonathan Young, Alison Bonello Boffa, Daniel Micallef, Michael J Boffa
{"title":"Pellagra associated with iron deficiency.","authors":"Jonathan Young, Alison Bonello Boffa, Daniel Micallef, Michael J Boffa","doi":"10.25251/04cxb449","DOIUrl":"https://doi.org/10.25251/04cxb449","url":null,"abstract":"","PeriodicalId":11040,"journal":{"name":"Dermatology online journal","volume":"31 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148162260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Gender based price differences in 5% minoxidil foam: The impact of generic alternatives and bulk packaging.","authors":"Lauren N McGrath, Steven R Feldman","doi":"10.25251/yfttck65","DOIUrl":"https://doi.org/10.25251/yfttck65","url":null,"abstract":"","PeriodicalId":11040,"journal":{"name":"Dermatology online journal","volume":"31 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148162269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}