Orsieres

Researchers are conducting a global study to understand the impact of moderate to severe alopecia areata (AA), non-segmental vitiligo (NSV), and hidradenitis suppurativa (HS) on adolescents and adults. This study aims to assess the burden these conditions place on patients' quality of life and daily functioning in a large real-world population. The study involves participants diagnosed by a physician with one of the three conditions: AA, NSV, or HS. There are no interventional treatments or medications being tested in this study, as it is observational in nature. Data collection focuses on patient-reported outcomes and measures that evaluate disease severity and its effects. Participants will complete various questionnaires and assessments related to their condition, such as the Alopecia Areata Symptom Impact Scale (AASIS) for AA, the Severity of Alopecia Tool (SALT) for scalp hair loss in AA, the Facial Vitiligo Area Scoring Index (F-VASI) and Vitiligo Quality of Life Score (VitiQoL) for vitiligo, and the Dermatology Life Quality Index (DLQI) and International Hidradenitis Suppurativa Severity Scoring System (IHS4) for HS. These tools help researchers understand how symptoms affect quality of life and disease severity. The study collects information up to the day of the study visit.