what is hs?
What is Hidradenitis Suppurativa? Hidradenitis Suppurativa (HS), also known in the European areas as Acne Inversa (AI), is a chronic, non-contagious, painful and quality of life impacting skin disease that causes boils to form in the folds of the skin and has a profound impact on quality of life1. Many will experience a boil at some point in life.