How is dermatitis herpeticform?

➢ Dermatitis herpetiformis is rare autoimmune disease caused by deposition of IgA at the tips of dermal papillae resulting in an inflammatory reaction that tends to form subepidermal blisters. ➢ Some cases of dermatitis herpetiformis are associated with celiac disease, suggesting that the immune response to gluten-associated antigens in the intestine may contribute to IgA-mediated disease in the skin