Nicolas Kluger

Nicolas Kluger
Helsinki University Central Hospital | HUCH

M.D., Ph.D Adjunct professor

About

588
Publications
72,577
Reads
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4,517
Citations
Additional affiliations
April 2017 - present
Hôpital Bichat - Claude-Bernard (Hôpitaux Universitaires Paris Nord Val de Seine)
Position
  • Consultant dermatologist
January 2009 - January 2011
Centre Hospitalier Universitaire de Montpellier
Description
  • Chef de clinique - Assistant des hôpitaux
November 2007 - November 2008
Sorbonne Université
Description
  • DEA Immunologie

Publications

Publications (588)
Article
Full-text available
Background and aims: Tattoo prevalence has significantly increased over the last decades. Proper tattoo aftercare, such as cleansing, moisturizing, and protection against sunlight, is essential to prevent complications and to keep the beauty of the tattoo. The tolerability, performance, and cosmetic acceptability of two dexpanthenol-containing der...
Article
Background: Tattoo ink safety is one of the main concerns surrounding tattooing practices. In order to better assess the risks and increase the safety of tattoo inks, it is important to know about the habits of tattooists in real life. Objective: We investigated the most popular inks in the French market and how professional tattooists used them...
Article
Résumé Depuis quelques années, le microblading connaît une popularité grandissante. Il s’agit d’une forme de micropigmentation superficielle, durant laquelle le pigment est déposé uniquement jusqu’au derme papillaire, à l’aide d’aiguilles superposées, disposées comme un scalpel. Les traits nets et discrets qui en résultent permettent de reproduire...
Article
Full-text available
Vasculitic ulcers belong to the category of atypical ulcers and are traditionally very slow to heal. The aim of this study is to retrospectively analyze the files of eight patients with vasculitic ulcers treated with negative pressure wound therapy (NPWT). Immunosuppression was initiated at least two weeks prior to starting NPWT. We suggest that th...
Article
Introduction En France, les patients ont recours à leur médecin traitant en premier lieu, avant de consulter un spécialiste si nécessaire. Les médecins généralistes peuvent se retrouver face à des patients atteints de maladies chroniques, ou recevant un traitement au long cours, souhaitant se faire tatouer sans pouvoir les conseiller de manière ada...
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Introduction La prévalence du tatouage est d’environ de 18 % dans le monde. En 2017, nous avions publié une série de cas de 31 patients de Finlande (de 1992 à 2016). Nous souhaitons présenter ici une série supplémentaire de 43 patients présentant des réactions cutanées au tatouage, qui ont été collectés de 2016 à 2021. Matériel et méthodes Nous av...
Article
Introduction La santé des dirigeants mondiaux est une source légitime de préoccupation pour la population et pour les historiens. Les troubles cognitifs peuvent avoir un impact sur les décisions relatives à leur mandat, en particulier lorsqu’ils surviennent au début de leur mandat. Le cancer et les maladies cardio-vasculaires peuvent entraîner une...
Article
Introduction Les vascularites urticariennes (VU) sont des maladies caractérisées par des lésions urticariennes atypiques et une vascularite leucocytoclasique, parfois associées à des symptômes extra-cutanés. Le traitement fait appel de manière croissante à la colchicine, l’hydroxychloroquine ou la disulone, à la corticothérapie puis aux immunosuppr...
Article
Introduction Les patients atteints de maladies auto-inflammatoires systémiques (MAI) peuvent être intéressés par la pratique du tatouage. Nous avons évalué l’étendue de la pratique du tatouage, l’expérience vécue et les complications éventuelles dans une cohorte de patients français. Matériel et méthodes Une enquête observationnelle par internet e...
Article
Introduction Les vascularites urticariennes (VU) sont des maladies caractérisées par des lésions urticariennes atypiques caractérisées par une vascularite leucocytoclasique, parfois associées à des symptômes extra-cutanés [1]. Le traitement fait appel de manière croissante à la colchicine, l’hydroxychloroquine ou la disulone, à la corticothérapie p...
Article
The search for clinical signs suggestive of diseases and medical analysis in works of art and portraits (sculpture, painting, engraving, photography, etc.) is known as iconodiagnosis1. This exercise is highly enjoyable, but limited by the own subjectivity of the spectators and their background. The lack of crosschecking by using additional sources...
Article
The prevalence of tattooing is about 18% worldwide. In 2017, we reported the first retrospective case series of 31 patients with cutaneous complications on tattoos from 2008 to 2016 from Finland. We wish to present an additional series of 45 patients from the following five years.
Article
The core function of the immune response is to distinguish between self and foreign. The multiorgan human autoimmune disease, autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED/autoimmune polyendocrine syndrome type 1) is an example of what happens in the body when central immune tolerance goes astray. APECED revealed the existe...
Article
The health of world leaders is a legitimate source of concern for the global population, and for historians. Cognitive disorders may impact their mandate decisions, particularly when occurring early in office [1]. Cancer and cardio‐vascular diseases may lead to disability with impossibility to carry out expected duties or unexpected death with powe...
Article
As vaccination campaign against SARS‐CoV‐2 is on‐going worldwide, dermatologists are witnessing an increasing number of cutaneous adverse events. Delayed hypersensitivity reactions at the site of injections with mRNA‐1273 (Moderna) [1] and BNT162b2 (Pfizer‐BioNtech) vaccines [2] are now known as “COVID‐arms”.
Article
Full-text available
Background: A moisturizer application during the healing process after a tattoo session is common practice to help wound healing and to reduce discomfort sensations. This practice was recently recommended by the standard European guidelines on tattoos, with the use of an adapted ointment to keep the site moist. Aims: To assess the efficacy and t...
Article
Full-text available
Tattoos are not mentioned as a source of exposure to nickel. Traces of nickel are almost inevitably found in tattoo inks as impurities and sometimes in tattooed skin. The question whether nickel in tattoos has any health consequence is debated. We performed a narrative review of what is currently known about this topic. Today, nickel is frequently...
Article
The Koebner phenomenon is associated with cutaneous lupus erythematosus (CLE). A 20-year-old woman with a 10-year history of systemic lupus, treated with hydroxychloroquine and methotrexate, presented with features of chronic discoid lupus erythematosus (DLE) on the scalp, at the site of ear piercings, and on the temporal bone at the site of trauma...
Article
Pietro Vannucci (ca. 1450 – 1523), better known as Pietro Perugino, was one of the most brilliant Italian Renaissance painter working in Rome, Florence, and Perugia. The sense of spaciousness and the compositional clarity of his painting anticipated the ideals of High Renaissance [1].
Article
Frontal fibrosing alopecia (FFA) is a chronic scarring alopecia that displays a distinctive presentation with a slowly progressive frontotemporal and preauricular recession of the hair line [1,2]. Other features can include: eyebrow, eyelid or other body hair loss, facial papules, trichodynia and itch [2].
Article
Complications associated with tattoos are mostly of cutaneous origin. They include chiefly ink allergy, local infection, benign tumors or malignant lesions and elective localization of various dermatoses. Tattoo-related systemic diseases and infections have more rarely been described, the most common being sarcoidosis and hepatitis C. However, unus...
Article
Introduction Le tatouage est une pratique de plus en plus répandue dans le monde, avec une prévalence d’environ 10–30 % de la population en occident. Le projet « Tatou » a évalué les risques liés au tatouage chez les patients psoriasiques. La première partie, internationale, a montré une forte opposition des dermatologues aux tatouages chez ces pat...
Article
Introduction Les efforts déployés pour freiner la propagation du nouveau coronavirus (SARS-CoV-2) ont conduit à un confinement simultané sans précédent de près des 2/3 de la population mondiale. L’impact du confinement sur les comportements alimentaires ou la santé mentale a fait l’objet d’étude mais à notre connaissance l’impact sur l’état cutané...
Article
Full-text available
Key points Since 2004, tattooing products have been recognized as such by French law. A tattooist must declare his activity to the ARS (French regional health agency). A tattooist is legally compelled to undergo training sessions on occupational safety and hygienic requirements and to deliver his certificate to the ARS. A tattooist commits himself...
Article
Background: Tattoos are an increasingly common phenomenon, with a prevalence of around 10-30 % of the population in Western countries. The "Tatou" project assessed the risks of tattooing for patients with psoriasis. The first part revealed strong opposition to tattoos in these patients on the part of dermatologists, despite fewer than a quarter of...
Article
Full-text available
Since 2002, it is unclear whether an epidural analgesia can be placed safely through a lower back tattoo. Theoretical risks of pigment tissue coring have led to precautionary measures and misconception that epidural analgesia should be excluded. We reviewed chronologically the 16 years of medical literature summarizing the so-called risks of epidur...
Article
Ten to 30% of the population is currently tattooed. However, tattooing is not completely harmless. This trend does not spare athletes and sports medicine specialists may have to manage tattooed athletes. The purpose of this study is to review the overall possible issues associated with tattoos among athletes. Overall, tattooed athletes are exposed...
Article
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Article
Résumé Les activités sexuelles peuvent parfois s’accompagner de traumatismes, d’infections ou d’allergies. Les patients peuvent cependant être réticents à donner des précisions sur les circonstances lors de la consultation. Le dermatologue peut ne pas être familiarisé avec ces manifestations, surtout si elles surviennent en dehors de la région géni...
Article
Introduction Data regarding tattoos among football players are limited. We investigated the prevalence and characteristics of tattoos among elite players over a full season in the Spanish La Liga. We assessed whether tattoos had any impact on the performance and behavior of players and teams on the pitch. Materials and methods Demographic (age, ge...
Article
Résumé Introduction Les tatouages peuvent s’accompagner de complications cutanées infectieuse, dont les présentations cliniques peuvent se révéler parfois différentes sur peau tatouée. Nous rapportons une présentation atypique de dermatophytose survenue sur deux tatouages récents en cours de cicatrisation, par contamination environnementale. Nous...
Article
The Editor in chief and Deputy Editors of the JAMA recently shared their concern regarding possible reporting of patients in more than one manuscript, while this has not been clearly indicated in the submission [1]. Although the unprecedented context of the COVID‐19 outbreak justifies efforts for rapid dissemination of knowledge, such practice may...
Article
Cutaneous manifestations associated with COVID‐19 start to get increasingly described [1‐3]. However, the link of causality remains uncertain. Reports of chilblains‐like lesions circulate on social medias and have appeared in the literature [4,5]. Google Trends (GT) provides data on the relative search volumes (RSV) of queries and topics over time...
Article
The oil canvas “Punch or May Day” (1829) by British painter Benjamin Robert Haydon (1786‐1846) is exhibited at Tate Britain in London [1,2]. The painting theatrically depicts a colorful London‐street scene not far from St Marylebone church during May Day a bit after noon. The crowd attends Punch and Judy puppet show in the middle of the street and...

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