 It can be very difficult to maintain a strict gluten-free diet, however, as contamination with gluten is common in many supposedly gluten-free foods and restaurants.Dapsone is an effective initial treatment in most people and is the initial drug of choice to alleviate the rash and itching.Itching is typically reduced within 2–3 days, however, dapsone treatment has no effect on any intestinal damage that might be present.