[Dermatitis herpetiformis and latent celiac disease in two siblings].
The association between coeliac disease (CD) and dermatitis herpetiformis (DH) is well known. Moreover, this cutaneous disease may be the only sign of an otherwise asymptomatic CD. Subjects presenting with both CD and DH generally show an HLA pattern in which A1, B8, DR2, DR7, DQw2 are the most frequent antigens one can find. We report about 2 brothers presenting with DH, clinically asymptomatic, without antigliadin serum antibodies (AGA), but positive to the research of antiendomysial (EMA) ones. The biopsy performed by digestive endoscopy showed a complete atrophy of duodenal villi and the diagnosis of CD was confirmed according to the European Society for Pediatric Gastroenterology and Nutrition (ESPGAN) criteria. The diet without gluten caused the DH to recovery and the duodenal villi microscopic aspect to normalize as well. Both the brothers had the same HLA pattern: A1, B8, DR3-DR2, DQw2. Our clinical study suggests that it is very important, especially for the general practitioner, to recognize a DH and in every child presenting with a dermatitis like that it will be mandatory to perform a laboratory research of both AGA and EMA.