Panton-Valentine leucocidin-producing Staphylococcus aureus: a clinical review.

Panton-Valentine leucocidin (PVL) is a virulence factor produced by certain strains of Staphylococcus aureus (SA). Through its cytolytic action on the cell membranes of human polymorphonuclear neutrophils, PVL causes a range of pathologies collectively known as PVL-SA disease. The hallmark clinical signs of PVL-SA are recurrent boils and necrotizing skin and soft tissue infections (SSTIs) in otherwise healthy patients; however, it can lead to more severe and invasive presentations, including necrotizing haemorrhagic pneumonia, necrotizing fasciitis and purpura fulminans. Young adults with minimal previous exposure to healthcare settings tend to be at highest risk for acquiring PVL-SA disease, with close physical contact playing a central role in disease transmission. The prevalence of PVL-SA varies globally; however, this is often underestimated owing to a lack of routine PVL testing. In the UK, PVL-positive SA isolates have been rising over the past decade alongside an increasing prevalence of multidrug resistance in larger cities. This review article aims to raise awareness of the PVL toxin, to aid clinicians with diagnostic pointers and to provide guidance with treatment, with an emphasis on the need for further population-based studies.

The Impact of the COVID-19 Pandemic on Global Health Dermatology.

In this article, we discuss the impact of the COVID-19 pandemic on various areas of global health dermatology, including patient care, neglected tropical diseases, education, and collaborations. Information was collected from literature review and informal interviews with more than 20 dermatologists from around the world. Many of the setbacks and hardships experienced by the global health community in the last year highlight long-standing global interdependencies and systems that perpetuate ethnic, economic, and social inequalities on local and global scales. The pandemic has brought discussions on global health colonialism and domestic health inequality to the forefront.

Integration of Management Strategies for Skin-Related Neglected Tropical Diseases.

The concept of skin neglected tropical diseases has been widely adopted into the policy and strategy of various organizations, governments, nongovernmental organizations, and health agencies. By pooling information and resources across different diseases, whose primary manifestations affect the skin, it is possible to deliver integrated surveillance and control programs and promote advocacy and reduction of disability and stigma. A further key part of the skin neglected tropical diseases program is the development and validation of training methods for front-line health workers. Networks that allow those involved in this work to share and compare expertise are being developed through various organizations.

Developing a Platform for Global Health Dermatology Mentorship and Collaboration: Introducing the International Alliance for Global Health Dermatology.

The International Alliance for Global Health Dermatology (GLODERM) was formed in 2019 with the aim to unite efforts toward skin health, open to members from any health profession, any country, and at any stage of training. This article highlights the case for such an alliance; discusses existing opportunities and gaps in global health dermatology; describes the development of a new international alliance; proposes future directions; and reflects on lessons learned.

The Skin-A Common Pathway for Integrating Diagnosis and Management of NTDs.

Many of the neglected tropical diseases (NTDs) have major skin manifestations. These skin-related NTDs or 'skin NTDs' cause significant morbidity and economic hardship in some of the poorest communities worldwide. We draw attention to the collective burden of skin disease and suggest that the skin be used as a platform for the integration of control activities for NTDs. The opportunities for integration are numerous, ranging from diagnosis and disease mapping to mass drug administration and morbidity management. The dermatology community has an important role to play, and will be expected to support research and control activities globally.

Vulval Crohn's disease: a clinical study of 22 patients.

Vulval Crohn's disease [VCD] is a challenging condition that can occur without gastrointestinal Crohn's disease [GCD]. We reviewed the clinical features and effects of therapy in a cohort of 22 patients with VCD to determine whether the presence of GCD affected the clinical presentation and treatment response. Of these, 64% had GCD and 65% of these presented with GCD prior to VCD. Fissuring, ulceration, and scarring were more common in those with VCD alone. Potent and ultra-potent topical steroids showed benefit in most patients. There was no clear evidence of sustained remission with metronidazole. Azathioprine was the most commonly used oral immunosuppressive agent, with an efficacy of 57%. Patients with both VCD and GCD had a better clinical response compared with those with VCD alone [70% and 25%, respectively]. Infliximab and adalimumab were effective in 56% and 71% of patients, respectively. Excision of redundant tissue was helpful in four patients. The absence of GCD may delay the diagnosis in women who present with vulval symptoms alone. The more active clinical features in those with VCD alone may represent a more aggressive condition, or the severity of the cutaneous disease may have been reduced by immunosuppression taken for GCD. Several patients obtained sustained remission in their GCD with anti-tumor necrosis factor alpha [anti-TNFα] agents while the VCD remained active.

Guidelines on the role of skin care in the management of mobile populations.

The Task Force for Skin Care for All: Community Dermatology, when seeking to collate evidence for capacity to benefit, wanted to know how best to manage mobile populations. The task force met where there is most experience at a time of maximum migration to the Mediterranean islands and to Italy from Somalia, Sudan, Cote d'Ivoire, Tunisia, and Libya. Members attended the workshop hosted by Aldo Morrone at the San Gallicano Hospital, Rome, Italy. Issues discussed were the size of the problem, ethics and legality, potential value of the migrant, dermatologist as carer, challenges met by interpretation, good listening, and transcultural mediation. The experiences of the National Institute for Health Migration and Poverty at the San Gallicano Hospital in Rome, Ethiopia, Malta, and Lampedusa were key to the development of guidelines on cultural competence.

The assessment of dermatological needs in resource-poor regions.

The assessment of health needs is a key step in determining the nature and level of health service provision required in any global region. In dermatology, information on needs has provided information on the scale and impact of skin conditions in poor rural and urban populations. In such areas, additional problems in providing adequate services are access to trained health care professionals and cost to families and individuals, set against the background of a village-mixed economy. A further problem is health literacy, which may limit the use of services. However, some of the most comprehensive surveys of the prevalence of skin disease have been carried out in resource-poor countries, and attempts have been made to assess these along with their impact on individual disability. These studies and their outcomes are described in this article.