This study is to assess the burden of disease in adolescent and adult participants with moderate or severe alopecia areata (AA), non-segmental vitiligo (NSV), or moderate to severe hidradenitis suppurativa (HS) in a large global real-world participant population.
Participants with Physician-confirmed diagnosis of non-segmental vitiligo (NSV), moderate to severe Alopecia Areata (AA), or moderate to severe hidradenitis suppurativa (HS)
Participants Ability to understand study questionnaires, with caregiver support as required for adolescents
Participating in interventional clinical trial(s) at time of study visit (participation in another non-interventional study or registry does not exclude a participant from this study)
Unable or unwilling to comply with study requirements and PRO collection