[A girl with an itchy skin disease].

A 10-year-old girl presented with chronic, itchy papulo-vesiculous skin lesions. Diagnosis of dermatitis herpetiformis was established based on elevated IgA endomysium and transglutaminase type 2 antibodies, and histological findings on skin biopsy. Dermatitis herpetiformis is the cutaneous expression of celiac disease. Treatment consists of gluten-free diet and diafenylsulfon.