I have had DH since I was around 18 I’m 61, been on Dapsone 100mg for at least 40 years but only take 1/2 tablet 50 mg day. Got Celiac in my late 40’s DH is a horrible thing to have, I end up scratching all night causing bleeding. I break out if I just have a bit of Gluten hidden in something. I wish there was a cure