Overview
Chronic skin rashes of bumps and blisters. The cause remains unknown, but genetics, gluten sensitivity, and other autoimmune diseases are believed to play a role. Some suspect that this is caused by deposits of immunoglobulin A (IgA) in the skin, which triggers additional immunologic reactions that form lesions. Typically DH is regarded as a manifestation of celiac disease, but less than 20% will have any of the other symptoms of celiac disease.