Skin Diseases

Background: \- Atopic dermatitis, or eczema, is a chronic skin disorder. Patients sometimes have infections with S. aureus bacteria. Researchers want to study how eczema treatments affect the number and the type of bacteria on the skin. Objectives: \- To study the effect of eczema treatments on skin bacteria. Eligibility: * Individuals between 2 and 25 years of age who have moderate to severe atopic dermatitis. * Healthy volunteers between 18 and 40 years of age with no history of eczema. Design: * Participants will be screened with a physical exam and medical history. Research samples will be collected. Skin biopsies may also be performed. * All participants will be assigned to one of several study groups. * Healthy volunteers must not have taken antibiotics in the year before the start of the study. * All participants will have regular study visits during their 1-year participation. More research samples will be collected at these visits. * Healthy volunteers may be asked to come in for a one-time follow up after the 1 year mark.

The main purpose of this study is to determine the efficacy and safety of baricitinib for the treatment of severe or very severe alopecia areata (hair loss) in children from 6 years to less than 18 years of age. The study is divided into 4 periods, a 5-week Screening period, a 36-week Double-Blind Treatment Period, an approximately 2-year Long-term Extension (LTE) Period, and a 4-week Post-treatment Follow-up period. Some individuals may be eligible to receive treatment after completing the LTE, for a maximum of 180 weeks.

This registry prospectively collects anonymized free-text symptom descriptions submitted voluntarily by adults through the OpenGenome platform at opengenome.bio. For each submission, the system retrieves real biomedical literature from PubMed and ClinicalTrials.gov in parallel, applies a constrained reasoning model operating under a strict output schema, and returns a structured biological signal report. The study evaluates the internal consistency of extracted signals, the calibration of confidence scores relative to dataset size and symptom specificity, and the distribution of biological signal categories across a large anonymous population. No intervention is assigned. No participant contact occurs. All data is anonymized at the point of collection.

Severe itch is a common symptom of many genetic skin disorders and leads to a negative impact on patient quality of life. The investigators hypothesize that: a) intervention with dupilumab will improve itch in patients with pruritic genetic inflammatory skin disorders, even those not recognized to be Th2-driven; and b) the administration of dupilumab will be well-tolerated, regardless of underlying genetic skin disorder. The total clinical study duration will be 26 months (104 Weeks). The treatment period will include a 16-week open-label phase and a 20-month long-term extension phase for those who qualify and wish to continue.

This is the first-in-human study of BG-A3004. The study will evaluate the safety, tolerability, pharmacokinetics (PK), immunogenicity, and pharmacodynamics (PD) of BG-A3004 after single and multiple doses administered in different dose levels in healthy participants (Part A) and patients with immune-mediated skin diseases (Part B), respectively. Study details include: * The study duration will be approximately 3 years. * The treatment duration will be 1 dose for Part A and 4 doses for Part B. * Safety follow-up period is 168 days after the last dose

The aim of this project is to start a biological and clinical collection of patients presenting autoimmune, dysimmune or auto-inflammatory dermatological diseases. This collection will provide appropriate biological samples to identify new biomarkers and to be accessible to the medical, scientific and industrial communities for the identification of new therapeutic strategies.

A single-arm open-label study assessing short-term (week 6, 16) and long-term (week 32) efficacy of guselkumab in adult participants with pyoderma gangrenosum (PG)

Chronic inducible urticaria (CIndU) is a group of skin disorders defined by recurrent itchy or burning wheals or angioedema that recur for more than six weeks with a specific triggering factor. This is different from chronic spontaneous urticaria which does not have a specific triggering factor. CIndU is subclassified in nine subtypes with each having its own specific trigger. These subtypes are further divided in physical urticarias (symptomatic dermographism, cold urticaria, delayed pressure urticaria, solar urticaria, heat urticaria, vibratory angioedema) or non-physical urticarias, i.e., cholinergic urticaria, aquagenic urticaria, and contact urticaria. Symptomatic dermographism (SD) is the most prevalent subtype of the physical urticarias. Its prevalence in Western populations is estimated to be between 1-5%. Following SD, cold urticaria (ColdU) is the next most common form, its annual incidence is estimated to be 0.05%. In this study, patients with the ColdU and symptomatic SD subtypes will be enrolled. As of yet, disease diagnosis of SD and ColdU is mostly purely clinical (clinical picture + patients' history), as there is a lack of objective biomarkers. Currently only two objective tools are available for the diagnosis of SD and ColdU, which are the FricTest and Temptest (both provocation tests). In addition, there is a lack of objective biomarkers for the prediction of treatment response and for the monitoring of treatment effects, as this is nowadays only monitored by patient reported outcomes.

The goal of this clinical trial is to learn if Oleogel-S10 gel works to treat skin wounds from two types of inherited epidermolysis bullosa (EB): junctional EB (JEB) or dystrophic EB (DEB) in the Japanese population. Children and adults may participate. The trial also looks at the safety of Oleogel-S10 gel. The main questions it will answer are: * Does Oleogel-S10 gel close wounds from JEB or DEB within 45 days or reduce the size of the wounds? * Are there any medical problems when using Oleogel-S10 gel? * How much of the drug ends up in your blood? The study has 2 parts. In Part 1, participants will: * Apply Oleogel-S10 gel to the EB wound dressings at least once every 4 days for 45 days. * Visit the clinic once every 2 weeks for checkups and tests. If participants complete Part 1, they may participate in Part 2 if they choose to. In Part 2, participants will continue to receive Oleogel-S10 gel until the product is available to buy in Japan or until the trial is stopped by the company.

The overall goal of this study is to develop OCT Vibrography (aka OCT elastography) as a novel tool for measuring biomechanical properties of human tissues in vivo.

This study is to describe the real-world treatment patterns and clinical outcomes in moderate-to-severe AD patients receiving abrocitinib over a 12-month observation period, and to describe patient demographic and baseline characteristics.

Prospective, multicenter cohort of 500 patients newly treated with systemic chemotherapy with CCI. The main objective of this study is to measure the incidence of skin reactions related to thoracic implantable chamber dressings.

Accurate assessment of skin pigmentation is essential in dermatology for properly diagnosing and managing a wide range of skin conditions. Traditionally, skin colour has been evaluated through visual inspection or by using classifications like the Fitzpatrick skin type. However, these methods can be subjective, culturally biased, and often are centered around lighter skin tones, which may lead to misdiagnosis or inappropriate treatment for individuals with darker skin. With advances in technology, non-invasive imaging tools such as colorimetry and multispectral imaging now offer more precise and objective ways to measure skin pigmentation. These methods can help provide consistent and unbiased information about skin tone, benefiting both clinical care and research. Despite these technological advances, there is currently no agreed-upon standard for how to measure skin pigmentation objectively in everyday clinical practice or research settings. This study aims to explore better, more accurate ways to measure skin pigmentation using modern, non-invasive imaging technologies. Traditional methods for assessing skin colour, like visual inspection or classifying by ethnicity, are often unreliable and biased. In this study, researchers will use tools such as colorimetry and multispectral imaging to measure skin pigmentation more objectively. The study includes two groups of participants: healthy adults and adults with skin conditions. Researchers will measure a value called the melanin index, which reflects the amount of pigment in the skin, and compare it across different areas of the body and among people with different skin tones and conditions. The goal is to understand how skin pigmentation varies and to see if these new technologies can help doctors more accurately diagnose and manage skin diseases for people of all skin types.

This clinical trial is about evaluating the suitability of multi-modal imaging technology, which covers virtually the entire body, to evaluate the possibility of screening and early detection of disease.

Atopic dermatitis (AD), also known as atopic eczema, is a chronic inflammatory skin disorder. The current first-line recommended treatment for AD is the use of emollients, topical corticosteroids (TCS), and oral antihistamines if necessary. However, patients often have side effects like skin atrophy and telangiectasia. And there were plenty of herbal medicine which are beneficial to atopic dermatitis in ancient Chinese medicine books and records. Therefore, the purpose of this study is to develop a new topical application of traditional Chinese medicine and evaluate its clinical efficacy in AD patients. In human trial, 66 Subjects diagnosed as AD will be enrolled and treated with Sophora flavescens Aiton topical ointment. After treatment we will estimate the efficacy and record adverse events to conduct statistically analysis. The 1st year project: (1) Expect to enroll 66 clinical subjects of AD. (2) Evaluate subjects 'symptom and proceed herbal ointment treatment. (3) Record treatment responses including adverse effect. (4) Conduct statistically analysis. The 2nd year project: (1) Completing enrollment of 66 clinical subjects of AD. (2) Finish evaluation and treatment of all subjects. (3) Statistically analysis all collecting data (4) Discuss and analyze the outcome.

The purpose of the study is to evaluate the efficacy of multiple human placental membrane products and Standard of Care (SOC) versus SOC alone in the management of nonhealing diabetic foot ulcers (DFUs) and venous leg ulcers (VLUs) over 12 weeks using a modified platform trial design.