Upadacitinib Monotherapy for Treatment of Pyoderma Gangrenosum.

Pyoderma gangrenosum (PG) is a rare, neutrophilic dermatosis that results in progressive, painful ulcers most commonly affecting the lower extremities. Although immunosuppressants are frequently used for therapy, there is no standard treatment approach, and recurrences are common. The pathogenesis of PG is believed to involve dysregulation of the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway, supporting the potential use of JAK/STAT inhibitors as a treatment option.

Nanodermatology.

Nanodermatology has been an emerging area of research and drug development in the last two decades. Nanodermatology lies at the intersection of nanotechnology, chemical engineering, biophysics, and pharmacology. Increasing research has yielded potential benefits of nanotechnology in the treatment of various skin conditions via enhanced transdermal drug delivery.

Guselkumab for Moderate to Severe Scalp Psoriasis Across All Skin Tones: Cohort B of the VISIBLE Randomized Clinical Trial.

Importance: Varying hair textures and hair care practices contribute to nuances in clinical presentation and management of scalp psoriasis across diverse patient populations. Cohort B of the VISIBLE trial enrolled participants with moderate to severe scalp psoriasis and skin of color, across the skin-tone spectrum.

Objective: To evaluate efficacy, quality of life, and adverse event outcomes of guselkumab, 100 mg, among participants with moderate to severe scalp psoriasis and skin of color over 48 weeks.

Use of Nemolizumab in the Treatment of Prurigo Nodularis and Atopic Dermatitis.

Prurigo nodularis and atopic dermatitis are chronic, inflammatory skin conditions characterized by significant pruritus that disrupts daily life. They also involve dysfunction of the T-helper 2 immune response, leading to the over secretion of interleukin-31 (IL-13) in the dermis and serum. Nemolizumab is a new IL-31 receptor antagonist that has shown high efficacy in the treatment of prurigo nodularis (PN) and atopic dermatitis (AD) in multiple phase 3 trials, with a good safety profile.

The Great Mimicker: Forgotten but not Gone.

Once subdued after the advent of penicillin, syphilis has re-emerged in recent years, with incidence rates rising in many countries, including the United States. Its reputation as "the great imitator" is well earned due to its widely variable presentation, particularly in its second stage. This contributes to a high rate of delayed diagnosis and misdiagnosis, adding significant burden to patients and the health care system generally.

Clinical and experimental aspects of tirbanibulin treatments.

Tirbanibulin is a topical medication approved in 2020 as a 5 day topical treatment for actinic keratosis, a precancerous skin lesion characterized by the hyperproliferation of atypical keratinocytes. Tirbanibulin exerts its effects through dual mechanisms: microtubule inhibition, which disrupts cell division, and Src kinase inhibition, which interferes with cancer-associated signaling pathways. Although its primary use is in AK, these mechanisms suggested potential therapeutic applications in a broader range of epithelial cancers.

Targeting IL-23 in Psoriatic Arthritis: A Review of Guselkumab's Efficacy and Utilization.

Psoriatic arthritis (PsA) is a chronic, inflammatory disease with heterogeneous clinical features. The pathogenesis of PsA involves a complex interplay of genetic, immunologic, and environmental factors, leading to the activation of the immune system and subsequent inflammation. Over the past decade, the understanding of the immune mechanisms underlying PsA has advanced significantly, particularly regarding the role of the interleukin-23/T helper 17 pathway in the disease process.

Cutaneous lupus erythematosus presenting as a nonhealing ulcer in an African American woman: A case report.

Objective: Cutaneous lupus erythematosus (CLE) is a chronic autoimmune disorder of the skin.

Methods: In this report, we describe the case of an African American woman with CLE who had an ulcer on her posterior thigh. Despite this, initial biopsy specimen of the lesion revealed no evidence of CLE until a repeat biopsy 5 months later.

The Role of Prostaglandin Pathway and EP Receptors in Skin Cancer Development.

Skin cancer is the most prevalent malignancy worldwide, with nonmelanoma skin cancers (NMSC) such as basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) constituting most cases. Melanoma, although less common, is the most aggressive form of skin cancer and is responsible for the majority of skin cancer-related deaths. Prostaglandins, particularly prostaglandin E2 (PGE2), play a central role in the pathogenesis of skin cancer by mediating inflammation, angiogenesis, immune suppression, and tumor progression through the cyclooxygenase (COX)-PGE2 pathway.

Co-occurring Melanoma in an Active Area of Vitiligo in Skin of Color.

The association between vitiligo and melanoma is complex. While the incidence of vitiligo in patients with melanoma is higher, the risk for the reverse, ie, the development of melanoma in a patient with vitiligo, is thought to be decreased. This report presents a case of melanoma developing on a non-sun-exposed site in a patient with skin of color and untreated vitiligo.

An Update on the Clinical Management of Cutaneous Leishmaniasis.

Cutaneous leishmaniasis (CL) is an infection caused by the Leishmania protozoa, which are primarily transmitted through bites of infected female sandflies. This article provides a comprehensive overview of the clinical management of CL, including an in-depth analysis of its epidemiology, prevention and control measures, diagnostic modalities - particularly molecular and serological, differential diagnosis with other lesions, and treatment options. Also discussed are recent concerns regarding the endemicity of CL, with a focus on the significant rise in travel-related cases as well as locally acquired cases, providing insight into the changing epidemiological landscape.

Myeloid leukemia cutis in the absence of systemic leukemia: A case report.

Leukemia cutis (LC) is an uncommon cutaneous manifestation of leukemia that involves the leukocytic infiltration of the skin. LC typically presents after a diagnosis of leukemia has been made but may rarely appear before confirmation of the disease. In this report, we describe the case of an 86-year-old male presenting with LC prior to a clear diagnosis of leukemia in the blood.

A Review of the Role and Treatment of Biofilms in Skin Disorders.

A biofilm is a diverse community of microorganisms enclosed in an extracellular matrix. Although this organization of cells exists naturally in healthy skin, it is also involved in the pathogenesis of multiple skin disorders, such as acne and atopic dermatitis. Because biofilms provide microorganisms with a survival advantage and increased resistance to traditional antibiotics, they can be very difficult to treat, particularly when the goal is to also preserve the natural skin microbiota.

FRONTIER-2: A phase 2b, long-term extension, dose-ranging study of oral JNJ-77242113 for the treatment of moderate-to-severe plaque psoriasis.

Background: More patients with moderate-to-severe plaque psoriasis achieved responses with JNJ-77242113, a targeted oral peptide inhibiting interleukin-23 receptor signaling, versus placebo (PBO) at week (W)16 of the phase 2 FRONTIER-1 study.

Objective: FRONTIER-2, a long-term extension of FRONTIER-1, evaluated JNJ-77242113 through 1 year.

Methods: FRONTIER-1 participants received JNJ-77242113 at doses from 25 mg daily to 100 mg twice daily or PBO through W16.

Innovation in Warts and Molluscum: An Updated Comprehensive Review.

This comprehensive review article gives an up-to-date assessment of the therapeutic landscape for warts and molluscum contagiosum (MC), focusing on advances made in the last 5 years. New treatment choices include VP-102 (Ycanth) for molluscum contagiosum, potentially intralesional Vitamin D3 for warts, and topical cidofovir for both. Immunotherapy is regarded as a potential option, especially in difficult situations.

Atypical presentation of psoriasis on the breast of an elderly woman: A case report.

Psoriasis is a chronic, inflammatory skin disease that affects over 60 million adults and children globally. It is classically characterized by pink plaques covered with silver scales on the extensor surfaces, trunk, or scalp. In this report, we describe the case of a woman in her late 60s with psoriasis presenting as a painful plaque on her left breast.

Effective Treatment of Basal Cell Carcinoma with a Topical Enzymatic Mixture Enriched in Bromelain: Summary of Proof-Of Concept Clinical Studies on the First 22 Tumors.

Basal cell carcinoma (BCC), the most prevalent form of human cancer, is traditionally treated by surgical and alternative destructive or topical chemical means, each with its advantages, challenges, and drawbacks. We describe our experience treating BCCs with a topical concentrate of proteolytic enzymes enriched in bromelain (CPEEB) sourced from pineapple stems. CPEEB has strong proteolytic, antitumor-proapoptotic, and inflammation modulation activities, and is approved for debridement of deep burns and starting phase 3 trials for chronic wounds.