Phase 1, Double- Blind Study, 15 week study, Patch test and Vaccine Injection, Males/Females 18-65 years old with history of urushiol exposure. The rash or allergic contact dermatitis of poison ivy is recognized as occurring after the exposure to the urushiol oil which is found in the leaves of poison ivy, oak and sumac. Currently there is no preventative treatment for contact dermatitis. The purpose of this study is to find out if the vaccine, PDC-APB can help with the prevention of contact dermatitis.

Atopic Dermatitis: Open Label, 64 weeks study. Injectable medicine. Males/Females 2-11 years with moderate to severe atopic dermatitis. The goal of the study is assess the uptake of the drug by the body and safety of nemolizumab administered with topical corticosteroids.

Participants will attend in person visit at the Dermatology Clinical Trial office. Dr. Zaenglein is the pediatric dermatologist in charge of this research study and will do all skin evaluations. In addition at different time points there will be blood that is drawn, questionnaires to be completed, and ECGs will be performed.

Study coordinator will discuss.

Patients with the clinical diagnosis of mild, moderate to severe Hidradenditis Suppurativa or normal healthy volunteers ages 18 and older to participate in a 1 time study visit. There is no treatment provided but we may gain information for the treatment of HS.

Eligible participants will attend a one time in person visit. During the visit, the study team will ask you to participate in the following activities: collect skin sample, blood sample and cheek swab. Take photographs of your HS lesions.

study coordinator will discuss.

Studies have show that patients with skin conditions are often subject to social stigma. Exposure to these negative biases can lead to negative feelings for the patient. This study seeks to evaluate how patients with various skin conditions are impacted by these social biases.

Take an online survey that is expected to take 15-20 minutes. You will be asked to provide your email and take a short (5-10 minute) survey with some of the same questions 72 hours later.

Moderate to Severe Acne Vulgaris: Males/Females 16 years and older. You will receive the study drug with either 1 hour or 3 hours between study drug application and illumination. The purpose of this study is to test the effectiveness and safety of the study drug, used at two different incubation times (time starting with administration of study drug until start of the red light illumination).

Subjects will attend in person visits in the Dermatology Clinical Trial Office. Your length of participation will depend on how your acne responds to the first treatment; the length of participation for 3 treatments will be approximately 25 weeks.Throughout the study at different time points Dr. Zaenglein will evaluate your acne, blood will be drawn, photos will be taken, and questionnaires will need to be completed.

Study Coordinator will discuss during phone screen.

This study is aiming to identify the differences in medicated hair care practices amongst adult patients with scalp conditions. Typical treatment for scalp conditions involves the continued use of medicated shampoos; however, hair care practices across all ethnic and racial barriers are different. This could impact the effectiveness of these medicated washes if they are by chance not being used frequently enough. To our knowledge, no research has explored hair care practices and their relationship to dermatological conditions that affect the scalp.

Participants will complete a one-time survey that will take approximately 5-10 minutes.

This survey study is looking to see how post-inflammatory hyperpigmentation (PIH) affects quality of life in people with skin of color.

Participants will complete a one-time survey that will ask about post-inflammatory hyperpigmentation.

The purpose of this research study is to collect skin samples from volunteers with HS and volunteers with healthy skin. The collected skin samples will be processed and compared to each other to see if there are specific differences in the skin between the HS volunteer group and the healthy skin volunteer group.

Participants will need to come to a one-time, in-person visit where biopsies (small skin samples) will be collected.- For participants with HS: Up to 4 biopsies will be collected - For participants with healthy skin: Up to 2 biopsies will be collected

Explore all stages of Hidradenitis Suppurativa with a topical medication.

There will be 7 in-person visits and 1 follow-up phone call over a 33 week period. Over the course of the study, the following study procedures will take place: medical history and medication history collection, ECG, lab tests (both blood and urine), photography, skin exams, physical exams, questionnaires, and skin biopsies.

Up to $350

The aim of this study is to obtain information regarding the incidence of hair-related concerns in women who wear hijab and to collect information pertaining to factors that could contribute to hair loss in women who wear the hijab.

This survey study will involve a one-time survey that will take 5-10 minutes.

This study is a placebo-controlled study testing the effectiveness and safety of a new drug (izokibep) in adults with hidradenitis suppurativa (HS). HS is a condition where painful skin lesions occur, most often in places on the body where there is friction (ex: armpits, under the breasts, buttocks, and groin). These lesions can drain and scar and will often reoccur.

For this study, participants will come to the study site about 17 times over approximately 59 weeks. During these visits, there will information about medical history and medications collected as well as demographic information, physical and skin exams, vital signs, blood and urine lab testing, ECGs, a chest x-ray, questionnaires, and a daily diary.

Phase 3, global, randomized, double-blind, placebo-controlled, multi-center study that will evaluate upadacitinib in the treatment of moderate to severe HS in adult and adolescent subjects who have failed to respond to or are intolerant of ant-TNF therapy and/or 1 approved non-anti-TNF-biologic therapy for HS.This study is comprised of a 35-day screening period, a 16 week placebo-controlled, double-blinded treatment period (Period 1), a 20-week re-randomized extension treatment period (Period 2), a 68-week long-term extension treatment period (Period 3) and a 30-day follow-up period.

You will completed 3 study periods over approximately 104 weeks. During that time at different time points you will have your skin examined, ECG, complete questionnaires, and have your labs drawn. In addition you will take the study medication as directed by the research study coordinators.

Participants 18 years and older who meet the diagnostic criteria for the basal cell nevus (Gorlin) syndrome will be assigned to receive either Patidegib Gel 2% or Placebo (no active medicine) to apply twice daily for 12 months. The assignment will be made according to sex assigned at birth, age, and number of BCC lesions at the treatment area at Baseline. The primary endpoint is a comparison between the 2 treatment arms of the number of new BCCs at Month 12 compared to Baseline. The BCCs will be imaged and tracked consistently throughout the study to identify new BCCs and to confirm their diagnosis by dermoscopy (handheld instrument with a 15x magnification lens and a cross-polarized light source).

Participants will participate in 15 visits over approximately 14 months (attend 6 in person visits along with 9 phone call visits). In addition, participants will receive study medication to apply twice a day for 12 months and undergo clinical tests at various time points, which include blood tests, ECG, complete questionnaires/diary, skin exam and skin photographs.

Compensation is provided for eligible participants.

Microcystic lymphatic malformations (mLMs) are masses of spongy tissue that may have small fluid-filled cysts. They are made of abnormally large or misshapen lymph vessels that do not work correctly. They are usually present at birth and get worse over time. Complications of mLMs include infection, bleeding, leaking of lymphatic fluid, disfigurement, and impaired mobility. The purose of this study is to find out if the study medicine, sirolimus 3.9% topical gel, can help with the treatment of mLMs.

Total duration of the study is approximately 28 weeks, with up to 8 visits (approximately 1 visit per month). 5 visits will occur in person and 3 visits will be phone call visits. You will also complete 2 interviews.Procedures involved in the study include: medical history collection, physical exams, skin assessments, patient interviews, photographs, blood draws (at up to 3 visits), urine tests, and questionnaires.