Suggest Treatment For Dermatitis Herpetiformis

I have dermatitis herpetiformis related to gluten intolerance. I'm currently taking dapsone orally to treat this autoimmune disorder. The medicine isn't as effective as it has been in the past. Trying to wrack my brain to how I'm being constantly exposed to gluten when I've had a strick diet eliminating gluten for a long time now. Recently I found mold growing in my apartment. Have done research around mold exposure & discovered you can get a form of dermatitis from this exposure. I have many symptoms related to mold exposure but many are common everyday symptoms. Recently I felt a shock sensation on the left side of my stomach.. Which is what brought me here. Any insight? I feel like I'm falling apart at the age of 31.