Dermatitis Herpetiformis is a chronic skin condition characterized by itchy, blistering rashes. It is closely associated with celiac disease, an autoimmune disorder triggered by gluten. The rash typically appears on the elbows, knees, and buttocks, and is caused by an abnormal immune response to gluten. Diagnosis often involves a skin biopsy and blood tests for anti-tissue transglutaminase antibodies. Treatment primarily includes a strict gluten-free diet, which can help alleviate symptoms and prevent further outbreaks. In some cases, medications like dapsone may be prescribed to manage the rash and itching.