Diagnosis of DH is established on the results of direct immunofluorescence test (DIF) revealing granular deposits of IgA in the papillae and the presence of circulating IgA antibodies directed against endomysium and/or tissue and epidermal transglutaminase (tTG, eTG) [2, 3]. Here, CD79A is linked to dermatitis herpetiformis, familial.