Complications
DH is an autoimmune disease, and patients with DH are more likely than others to have thyroid problems and intestinal lymphoma.
Dermatitis herpetiformis does not usually cause complications on its own, without being associated with another condition. Complications from this condition, however, arise from the autoimmune character of the disease, as an overreacting immune system is a sign that something does not work well and might cause problems to other parts of the body that do not necessarily involve the digestive system.
Gluten intolerance and the body's reaction to it make the disease more worrying in what concerns the possible complications. 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 patients follow a gluten-free diet. The disease has been associated with auto-immune thyroid disease, insulin-dependent diabetes, lupus erythematosus, Sjögren's syndrome, sarcoidosis, and vitiligo or alopecia areata.
Read more about this topic: Dermatitis Herpetiformis