View clinical trials related to Dermatitis, Contact.
Filter by:The global coronavirus disease pandemic (COVID-19) has led to an increased need to wear protective equipment such as wearing face masks and practicing hygiene measures such as more frequent use of antiseptics. These measures can lead to changes in the skin, the development of new inflammatory skin diseases or exacerbation of existing ones, with health professionals especially under the risk of developing these changes. Changes in the skin of the hands due to the use of antiseptics have been observed in a number of studies, however, part of the study was based solely on subjects' self-assessment or clinical assessment of researchers, and only a small part on objective measurements of skin parameters. Also, the impact of prolonged use of antiseptics and the impact of measures to prevent and protect against irritation such as topical application of emollient preparations have not been investigated. The impact of repeated use of antiseptics in the repeated exposure model on the forearms will be investigated. This model is a modification of the existing model of irritative dermatitis induced by sodium lauryl sulfate where the original irritant was replaced by an antiseptic solution.
Polymorphic light eruption (PLE) is the most common form among UV-inducible disorders with a prevalence of approximately 11-21% worldwide and a clear predisposition of women. Usually, within several hours after an intense UV exposure, most likely in spring or early summer, the formation of itchy skin lesions particularly at the upper arms and V-neck and neck is distinctive for PLE. It has been suggested that the development of a potential photo-induced antigen may initiate a delayed-type hypersensitivity reaction in PLE (causing the skin rash) and the microbiota of the skin may be involved. We thus hypothesized that eliminating the microbiota of the skin by disinfection may affect the formation of PLE. The concept of this study covers a combined interindividual and intraindividual half-body comparison of the skin reactions of disinfected and contralateral non-disinfected areas upon UV exposure in PLE patients and healthy subjects.
The aim of this study is to investigate the effects of dupilumab on allergic contact dermatitis.
The risk of sensitization and contact dermatitis among workers exposed to epoxy resin systems (ERS) is high despite extensive preventive efforts, probably because skin exposure is often left unrecognized. The main objective of this project is to prevent epoxy-related dermatitis and sensitization, caused by working with ERS, by fluorescence visualization of exposure. In cooperation with global manufacturers of wind turbines, 250 lamination workers will be allocated to either an intervention or a control Group. The risk of dermatitis and sensitization will be compared. Skin exposure will be made visible by a fluorescent tracer added to the ERS. UVA-light will illuminate the skin of head, neck, arms and hands and the fluorescent areas will be recorded and quantified by a computer vision system. The intervention group will be shown the fluorescent areas on their skin, while the control group will not have this information. The intervention takes place daily for a period of 1 month, 4 times during the 2 year follow up period. All participants are patch tested, screened for dermatitis and atopy at start and end of follow up or at end of employment. The investigators also assess potential determinants for ERS exposure including working tasks and procedures. Information on dermatitis diagnoses from hospital contacts, medical prescriptions and education will be obtained from registers.
The molecular mechanisms of action of photo(chemo)therapy in skin diseases are investigated in this study. The phototherapeutic modalities employed include UVB (ultraviolet B), UVA (ultraviolet A), PUVA (psoralen+UVA) and/or extracorporeal photochemotherapy (photopheresis). The study will address whether and how photo(chemo)therapy affects specific biologic pathways in different skin disorders and search for predictive biomarkers.
The current knowledge of the pathophysiology of allergic contact dermatitis is based on the murine model. In this model, CD8+ T cells are effector cells, and CD4+ T cells regulate the response by limiting the expansion of CD8+ T cells. The goal of this study is to characterize the pathophysiology of contact dermatitis, with patients allergic to para-phenylenediamine (PPD). We suppose that the CD8+ T cells are the effectors of the allergic contact dermatitis, although the regulator cells belong to the LT CD4+ population. We will test our hypothesis on blood samples, and cutaneous biopsies of patients allergic to PPD.