 This means that complications that may arise from dermatitis herpetiformis are the same as those resulting from coeliac disease, which include osteoporosis, certain kinds of gut cancer, and an increased risk of other autoimmune diseases such as thyroid disease.The risks of developing complications from dermatitis herpetiformis decrease significantly if the affected individuals follow a gluten-free diet.Global estimates of the prevalence of dermatitis herpetiformis range from 1 in 400 to 1 in 10,000 people.