Nobody in my family had it except for me. I read it was either too much or not enough of some kind of protein in our blood. Doctors used to say it was from ingrown hairs and I've had sweat glands removed cause supposedly they have something to do with it too.Everybody has an answer, just no cure!

HS is an autoimmune condition, that is generic and can come on at any time or never come. i havr 10 siblings and only 2 of us have HS. and my Dad and his mom have it as well.